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FLCCC Alliance MATH+ ascorbic acid and I-MASK+ ivermectin protocols for COVID-19 – A Brief Review

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FLCCC Alliance MATH+ ascorbic acid and I-MASK+
ivermectin protocols for COVID-19 — a brief review
Mika Turkia
M.Sc., mika.turkia@alumni.helsinki.fi, November 10, 2020
Abstract
An alliance of established experts on critical care, Front Line Covid-19 Critical Care Alliance (FLCCC),
has published two protocols for treatment of COVID-19. The first one, MATH+, is intended for hospital
and intensive care unit treament of pulmonary phases of the disease. It is based on affordable, commonly
available components: anti-inflammatory corticosteroids (methylprednisolone, “M”), high-dose vitamin
C infusion (ascorbic acid, “A”), vitamin B1 (thiamine, “T”), anticoagulant heparin (“H”), antiparasitic
agent ivermectin, and supplemental components (“+”) including melatonin, vitamin D, elemental zinc
and magnesium.
The MATH+ protocol has received scarce attention due to the World Health Organization advising
against the use of corticosteroids in the beginning of the pandemic. In addition, randomized controlled
clinical trials were required as a condition for adoption of the protocol. As the hospital mortality rate
of MATH+ treated patients was less than a quarter of the rate of patients receiving a standard of care,
the authors of the protocol considered performing such trials unethical.
Later, other parties have performed clinical trials with e.g. corticosteroids and anticoagulants which has
led to their more widespread adoption. Other essential components of the protocol remain unadopted.
In October 2020, ivermectin was upgraded from an optional component to an essential component of the
protocol. According to the authors, ivermectin is considered the first agent effective for both prophylaxis
(prevention) of COVID-19 and for treatment of all phases of COVID-19 including outpatient treatment
of the early symptomatic phase. Therefore, at the end of October 2020, a separate ivermectin-based
I-MASK+ protocol for prophylaxis and early outpatient treatment of COVID-19 was published.
Keywords: COVID-19; SARS-CoV-2; ivermectin, methylprednisolone, ascorbic acid, thiamine, heparin
ORCID iD: 0000-0002-8575-9838
Early developments
The first version of the protocol was based on corticosteroid hydrocortisone, vitamin C and thiamine.1,2
This protocol had been used for treatment of sepsis for several years.3In January-February 2020, an
anticoagulant was added to the protocol. Hydrocortisone was upgraded to methylprednisolone in April.
Ivermectin was added as an optional component in May and upgraded to an essential component in
October.
In the beginning of the pandemic corticosteroids were a controversial subject, possibly due to the phase-
specific nature of COVID-19 not having been fully understood. In early 2020, the World Health Organi-
zation advised against the use of corticosteroids. This advisory was later proven to have been misguided.4
It was officially changed no earlier than September 2, 2020.5According to the current data, corticos-
teroids appear disadvantageous in the early symptomatic phase but necessary in the late pulmonary
phase.
1
This preprint research paper has not been peer reviewed. Electronic copy available at: https://ssrn.com/abstract=3723854
Another generally accepted method have been anticoagulants. As an example, adoption of anticoagulants
in one US hospital reduced the need for mechanical ventilation from 30% to 8% and reduced the hospital
mortality rate from 63% to 29%.6
In the first half of 2020, hospital mortality rate of patients treated with MATH+ was 5%, in contrast
to a standard of care rate of over 20%.7In Europe, ICU mortality in the same period was 24% and in
Finland 13-15%.8,9
Due to the difference in mortality rates the authors of the MATH+ protocol did not consider performing
randomized controlled trials ethical. As other parties refused to overlook this requirement, widespread
adoption of the protocol did not occur.
The FLCCC alliance perspective on COVID-19
According to the MATH+ protocol, COVID-19 progresses in phases. Different phases require slightly
different, phase-specific treatment approaches.2Approximately 20 to 40 percent of the patients are
estimated to be symptom-free. For symptomatic patients, there are four phases. The first phase is an
approximately four-day symptomless incubation period. It is followed by an early symptomatic phase of
approximately six days. The third phase is an early pulmonary phase of approximately three days. It is
followed by a late pulmonary phase of approximately two weeks.
After a droplet or aerosol mediated infection through airways or eyes, a symptomless incubation period
follows, during which SARS-CoV-2 replicates predominantly in the nasal pharynx.10,11 In this phase,
antiviral agents such as quercetin or zinc may be beneficial.12,13,14,15,16
Infectivity is the highest in symptom-free individuals, during the incubation period, and in the beginning
of the early symptomatic phase.17,18 Masks reduce the inoculum size.19 A smaller viral load may enable
the innate immune system to overcome the infection or at least lessen its severity. Sufficient levels of
vitamin D have been observed to protect from SARS-CoV-2 infection to some degree.20,21
After the early pulmonary phase the patient is no longer considered infective. This is due to a fall in
viral replication and viral load resulting to only non-replicable virus particles remaining in the body.22,23
Regardless, even though the patient is no longer infective, tests based on detection of these virus particles
may give a positive result.
Since patients are typically not admitted to hospitals before the early pulmonary phase and because
antiviral pharmaceuticals have been tested on these hospital patients, the antivirals have failed in
trials.24 Patients do not die due to living viruses but due to a delayed, dysregulated immune response
triggered by the dead virus particles.25
It is essential to begin controlling this inflammatory immune response immediately at the onset of
symptoms before the inflammation causes organ damage that is difficult to repair.26 Therefore, it would
be essential to have an outpatient protocol for treatment of the early symptomatic phase, to be started
immediately at the onset of mild symptoms.
After the early symptomatic phase, approximately one-fifth of patients progress to the early pulmonary
phase,27 which typically includes inflammation and organizing pneumonia.28,29,30 Inflammation may
progress through redundant cell signaling pathways; therefore, blocking a single pathway with a single
pharmaceutical is unlikely to inhibit progression of the disease.31 Therefore, the presented protocols
utilize multiple agents to block multiple pathways and to gain synergistic effects.
Suppressing the immune response in the early and late pulmonary phases is partially performed with
corticosteroids.4Of those, methylprednisolone is considered especially suitable.32,33
Another component for controlling the immune response is ascorbic acid. The rationale for using vi-
tamin C infusion is that in the late pulmonary phase the vitamin C levels of the patients have been
observed to reach levels corresponding to scurvy.34,35 Vitamin C has broad-spectrum antiviral, antibac-
terial and anti-inflammatory effects.36,37 It may reduce the duration of mechanical ventilation and prevent
pneumonia.38,39,40 Methylprednisolone and vitamin C synergistically amplify each other’s effects.41 In
2014, vitamin C infusion for sepsis was proven safe in a US trial.42
2
This preprint research paper has not been peer reviewed. Electronic copy available at: https://ssrn.com/abstract=3723854
A central component of the MATH+ protocol is heparin (more specifically, enoxaparin belonging to
the low molecular weight heparin family) which has also non-anticoagulant benefits.43,44,45 In addition,
MATH+ protocol utilizes thiamine which is often low in the elderly. Thiamine deficiency leads to
diminished ATP production in the cells and may contribute to e.g. mental confusion.46 Melatonin may
protect against multiorgan failure.47,48
Approximately half of recovered patients suffer from post-discharge persistent symptoms.49,50 These may
be partly due to above mentioned deficiencies of vitamins and trace elements and might be alleviated by
supplementation. Care should be taken to avoid e.g. excessive zinc supplementation which may cause
copper deficiency.51
Ascorbic acid protocols in Shanghai and the United States
For more than a decade, vitamin C infusion had already been used in Shanghai, China for severe illnesses
requiring intensive care.52 In late 2019, a combination of high-dose vitamin C, heparin, anticoagulants
and antivirals was adopted as the official treatment protocol of COVID-19 in the Shanghai area.53,54,55
In general, these findings raised scarce interest outside China, along with other options such as lian-
huaqingwen which has been proven effective in clinical trials.56,57,58
The difference between the Shanghai protocol and the Marik protocol appears to be that the Shanghai
recommendation was cautious towards corticosteroids and did not include e.g. thiamine, zinc or quercetin.
The national guideline of China published in English in March 2020 recommended heparin and corti-
costeroids, did not mention ascorbic acid but included anti-inflammatory traditional Chinese medicine
preparations.59 Similarly, guidelines for children included corticosteroids and TCM preparations.60
A randomized clinical trial of vitamin C for COVID-19 was started in China in February but due to
the successful early containment of the epidemic only 56 patients could be recruited.61 Regardless, the
treatment was shown to statistically significantly improve oxygenation (P=0.01). On a 5% significance
level (P=0.05), groups differed with respect to IL-6 and bilirubin levels and, importantly, with respect
to mortality of most severely ill patients. The hospital mortality rate of patients with a sequential organ
failure assessment score of equal or larger than 3 was 22%, in contrast to 52% in the control group. If
the study had not ended early due to lack of patients, the results would likely have been indisputable.
Ascorbic acid protocols in evidence-based medicine
As mentioned above, the MATH+ protocol had its origins in a vitamin C protocol developed for sepsis.3
The historical developments related to general adoption of this method promoted by another research
group appear interesting. The adoption process seems to have been hindered by dogmatic adherence to
formal requirements, an approach in which formalities seems to have mattered more than actual clinical
outcomes or common sense. In the case of a decisive phase III sepsis trial,62 this meant funding body
influenced selection of primary endpoints that in retrospect appeared poor, and a methodological error
which turned these endpoints statistically insignificant, resulting in the study being labeled negative and
the method continuing to be largely ignored.63,64
Disregarding what had been chosen for endpoints and looking at the actual data,62 it can be seen that
during the vitamin C infusion all-cause mortality rate was 5% in comparison to 23% in the control group,
and that the difference remained after discontinuation of the infusion until the end of the observation
period of 28 days. Yet in the world of misunderstood or misapplied evidence-based medicine this evidence
was deemed irrelevant on a technicality. It should be noted that these kind of research practices result
not only in inferior science but also in huge societal inefficiencies. These historical biases have likely also
hindered adoption of vitamin C for COVID-19.
The role of ivermectin
A systematic review from June states that ivermectin has known antiviral effects on a broad range of
RNA and DNA viruses, including those with positive-sense single-stranded RNA, the class of viruses
3
This preprint research paper has not been peer reviewed. Electronic copy available at: https://ssrn.com/abstract=3723854
that includes SARS-CoV-2.65 The authors note that significant effectiveness of ivermectin is seen in the
early stages of infection, thus indicating that ivermectin administration may be effective in the early
stages or prevention.
In June, a single treatment with ivermectin was shown to effect approximately 5000-fold reduction in virus
at 48 h in cell culture.66 The relevance of this observation has been disputed by the fact that the dose was
35-fold higher than the maximal concentration achieved with the approved clinical dose. With regard to
overdosing, ascorbic acid has been shown to protect from side effects of ivermectin overdose.67 However,
it has been suggested that ivermectin’s mechanism of action may be predominantly anti-inflammatory
or ionophoric.68,69,70 In addition, a new mechanism of action has recently been identified.71
Despite the exact mechanism of action being unknown, trials continue to indicate an effect. A random-
ized controlled trial published in August indicated that ivermectin prevented appearance of symptoms
in outpatients’ family members by a factor of seven (7.4% vs 58.4%).72 In another trial, ivermectin
prophylaxis reduced COVID-19 infections among healthcare workers by 73%.73
A randomized controlled trial published in October with ivermectin and doxycycline indicated shortened
course of disease, reduction in the number of patients that remained persistently positive for RT-PCR of
COVID-19, and prevention of clinical deterioration.74 Another clinical trial with ivermectin and doxy-
cycline yielded similar results.75
An earlier a retrospective study in May indicated lower mortality among ivermectin-treated patients
with severe pulmonary involvement (32.0% vs 81.8%, P=0.002).76 Overall mortality rates were 13.3%
vs 24.5%, P=0.045, respectively. Corticosteroids were used for 25.5% of patients in the ivermectin group
and 21.4% in the control group. Ivermectin group had 25.5% severe cases vs 22.4% in the control group.
There was no mention of anticoagulants; lack of their use might explain the high overall mortality.
In Peru, despite lack of randomized controlled trials at the time, ivermectin was officially adopted and
nationally distributed already since May 8, 2020. Regardless of the rationale behind the official adoption,
the idea seems to have emerged from successful grassroots experimentation in Iquitos,77 a city better
known for ayahuasca.78,79,80 Epidemiological statistics indicate a declining trend in excess mortality.81
Ivermectin has subsequently been distributed in some areas of Brazil and Bolivia. Veterinary formulas
appear to have been administered parenterally (injection) and orally without significant issues.82
Almost 70 clinical trials are being planned or ongoing.83 For example, a combination therapy trial with
ivermectin, doxycycline, zinc and vitamins C and D3 is being planned in Australia (NCT04482686).
A trial with three times the conventional dose of ivermectin finished in Argentina (NCT04381884),
reportedly confirming expectations of effectiveness.84,85 In Europe, studies are ongoing in Spain
(NCT04390022), Italy (NCT04438850), Bulgaria (EudraCT 2020-002091-12) and Israel (NCT04429711).
Finally, it may be pointed out that while the promising results about e.g. ivermectin may be considered
preliminary, abundant available data about expensive alternatives such as remdesivir indicate proven
inefficiency.86,87 It is unclear whether in the early phases of the pandemic the public has been intentionally
misled to ignore more suitable options.
Conclusions
Two of the main components of the MATH+ protocol presented in January-March 2020, corticosteroids
and heparin, have been generally adopted in the second half of 2020. Also thiamine is often being
supplemented. Ascorbic acid remains unadopted. Considering that it has been shown safe, that patients
with severe disease have been shown to essentially suffer from scurvy, that ascorbic acid has successfully
been used for COVID-19 in Shanghai area to the extent of it having been adopted as a standard of
care, and that it has been used for hundreds of patients in two US hospitals with significant benefits
on mortality, it is difficult to see a rationale behind non-adoption. Considering the roughly four-fold
difference in mortality rates in the first half of 2020, it seems unfortunate that the protocol has been
ignored.
Concerning ivermectin, it might be even more unfortunate to repeat the same mistake as with MATH+,
and continue exacerbating the societal costs of the pandemic by not reacting in time. The main interests
4
This preprint research paper has not been peer reviewed. Electronic copy available at: https://ssrn.com/abstract=3723854
with ivermectin are prophylaxis and outpatient treatment. Preliminary data suggests significant benefits.
Considering that the early predictions of the authors about corticosteroids and anticoagulants have later
been proven correct, and as there are no concerns regarding safety or cost, it might be unadvisable to
wait for more results from ongoing clinical trials. In an emergency situation, dogmatic adherence to
extremely slow and inflexible evidence-based medicine practices may result in exactly the kind of harm
it was intended to protect the society from.
Even if ivermectin unexpectedly would not live up to the promise, at this point it would appear to be an
affordable insurance policy. In summary, adoption of the suggested measures might significantly reduce
the need for vaccinations, lockdowns and other societal restrictions, easing also the financial burden of
COVID-19.
Funding: None.
Conflict of Interest: None.
Ethical Approval: Not applicable.
Additional information:
https://covid19criticalcare.com
https://www.evms.edu/covidcare
http://covidcare.fi
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... This was followed by adoption of ivermectin in several South and Central American countries, the state of Uttar Pradesh in India, and Bangladesh in the second and third quarter of 2020. In late October 2020, the Front Line COVID-19 Critical Care Alliance (FLCCC) published its ivermectin-based outpatient protocol called I-MASK+ [8]; [9]; [10]. ...
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An extension to a previous timeline covering April 2020–March 2021 (http://dx.doi.org/10.13140/RG.2.2.13705.36966). The new timeline covers the period from April 2021 to June 2021. *** Topics: WHO's role and its funding, Gavi, COVAX, Trusted News Initiative, International Fact-Checking Network, the role of private philantrophy, Frontiers issue, comparison to the H1N1 pandemic, new treatment protocols, causal modeling.
... On November 10, a preprint by Turkia briefly reviewed the early history of the FLCCC Alliance protocols, suggesting that ivermectin should be used based on existing data suggesting significant benefits, and that waiting for additional data may result in significant harm [160]; [161]. ...
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An extended version of an earlier preprint written on March 24, 2021. This version includes events up to March 31, 2021. Changes: - Abstract - Introduction - April 26 - September 25 - December 7 - February 9 - March 15 - from March 22 to March 31 - Discussion *** Update June 30: a second part (an extension) to this timeline is available here: https://doi.org/10.13140/RG.2.2.16973.36326
... 148 On November 10, a preprint by Turkia briefly reviewed the early history of the FLCCC Alliance protocols, suggesting that ivermectin should be used based on existing data suggesting significant benefits, and that waiting for additional data may result in significant harm. 149,150 On November 11, a preprint indicated that 0.6 mg/kg/day for five days was well tolerated (NCT004381884). 151 A significant difference in reduction in viral load was found in patients with higher median plasma ivermectin levels (72% IQR 59-77) versus untreated controls (42% IQR 31-3) (p=0.004). ...
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This is an outdated version. Please see an extended version written on April 3, 2021: https://doi.org/10.13140/RG.2.2.13705.36966
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Objectives COVID-19 patients suffer from the lack of curative therapy. Hence, there is an urgent need to try repurposed old drugs on COVID-19. Methods Randomized controlled study on 70 COVID-19 patients (48 mild-moderate, 11 severe, and 11 critical patients) treated with 200ug/kg PO of Ivermectin per day for 2-3 days along with 100mg PO doxycycline twice per day for 5-10 days plus standard therapy; the second arm is 70 COVID-19 patients (48 mild-moderate and 22 severe and zero critical patients) on standard therapy. The time to recovery, the progression of the disease, and the mortality rate were the outcome-assessing parameters. Results among all patients and among severe patients, 3/70 (4.28%) and 1/11 (9%), respectively progressed to a more advanced stage of the disease in the Ivermectin-Doxycycline group versus 7/70 (10%) and 7/22 (31.81%), respectively in the control group (P>0.05). The mortality rate was 0/48 (0%), 0/11 (0%), and 2/11 (18.2%) in mild-moderate, severe, and critical COVID-19 patients, respectively in Ivermectin-Doxycycline group versus 0/48 (0%), and 6/22 (27.27%) in mild-moderate and severe COVID-19 patients, respectively in standard therapy group (p=0.052). Moreover, the mean time to recovery was 6.34, 20.27, and 24.13 days in mild-moderate, severe, and critical COVID-19 patients, respectively in Ivermectin-Doxycycline group versus 13.66 and 24.25 days in mild-moderate and severe COVID-19 patients, respectively in standard therapy group (P<0.01). Conclusions Ivermectin with doxycycline reduced the time to recovery and the percentage of patients who progress to more advanced stage of disease; in addition, Ivermectin with doxycycline reduced mortality rate in severe patients from 22.72% to 0%; however, 18.2% of critically ill patients died with Ivermectin and doxycycline therapy. Taken together, the earlier administered Ivermectin with doxycycline, the higher rate of successful therapy.
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Although interferons inhibit SARS-CoV-2 and have been evaluated for treatment of coronavirus disease 2019 (COVID-19), the most effective types and antiviral effectors remain to be defined. Here, we show that IFN-γ is particularly potent in restricting SARS-CoV-2 and in inducing expression of the antiviral factor ZAP in human lung cells. Knockdown experiments revealed that endogenous ZAP significantly restricts SARS-CoV-2. We further show that CpG dinucleotides which are specifically targeted by ZAP are strongly suppressed in the SARS-CoV-2 genome and that the two closest horseshoe bat relatives of SARS-CoV-2 show the lowest genomic CpG content of all coronavirus sequences available from this reservoir host. Nonetheless, both the short and long isoforms of human ZAP reduced SARS-CoV-2 RNA levels, and this activity was conserved in horseshoe bat and pangolin ZAP orthologues. Our findings indicating that type II interferon is particularly efficient against SARS-CoV-2 and that ZAP restricts this pandemic viral pathogen might promote the development of effective immune therapies against COVID-19.
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Background Ivermectin was shown to inhibit severe acute respiratory syndrome coronavirus 2 replication in vitro, which has led to off-label use, but clinical efficacy has not been described previously. Research Question Does ivermectin benefit hospitalized coronavirus disease 2019 (COVID-19) patients? Study Design and Methods Charts of consecutive patients hospitalized at four Broward Health hospitals in Florida with confirmed COVID-19 between March 15 and May 11, 2020, treated with or without ivermectin were reviewed. Hospital ivermectin dosing guidelines were provided, but treatment decisions were at the treating physician’s discretion. The primary outcome was all-cause in-hospital mortality. Secondary outcomes included mortality in patients with severe pulmonary involvement, extubation rates for mechanically ventilated patients, and length of stay. Severe pulmonary involvement was defined as need for Fio2 ≥ 50%, noninvasive ventilation, or invasive ventilation at study entry. Logistic regression and propensity score matching were used to adjust for confounders. Results Two hundred eighty patients, 173 treated with ivermectin and 107 without ivermectin, were reviewed. Most patients in both groups also received hydroxychloroquine, azithromycin, or both. Univariate analysis showed lower mortality in the ivermectin group (15.0% vs 25.2%; OR, 0.52; 95% CI, 0.29-0.96; P = .03). Mortality also was lower among ivermectin-treated patients with severe pulmonary involvement (38.8% vs 80.7%; OR, 0.15; 95% CI, 0.05-0.47; P = .001). No significant differences were found in extubation rates (36.1% vs 15.4%; OR, 3.11; 95% CI, 0.88-11.00; P = .07) or length of stay. After multivariate adjustment for confounders and mortality risks, the mortality difference remained significant (OR, 0.27; 95% CI, 0.09-0.80; P = .03). One hundred ninety-six patients were included in the propensity-matched cohort. Mortality was significantly lower in the ivermectin group (13.3% vs 24.5%; OR, 0.47; 95% CI, 0.22-0.99; P < .05), an 11.2% (95% CI, 0.38%-22.1%) absolute risk reduction, with a number needed to treat of 8.9 (95% CI, 4.5-263). Interpretation Ivermectin treatment was associated with lower mortality during treatment of COVID-19, especially in patients with severe pulmonary involvement. Randomized controlled trials are needed to confirm these findings.
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Background: Since the emergence of COVID-19, tens of millions of people have been infected, and the global death toll approached 1 million by September 2020. Understanding the transmission dynamics of emerging pathogens, such as SARS-CoV-2 and other novel human coronaviruses is imperative in designing effective control measures. Viral load contributes to the transmission potential of the virus, but findings around the temporal viral load dynamics, particularly the peak of transmission potential, remain inconsistent across studies due to limited sample sizes. Methods: We searched PubMed through June 8th 2020 and collated unique individual-patient data (IPD) from papers reporting temporal viral load and shedding data from coronaviruses. We analyzed viral load trajectories using a series of generalized additive models, and the duration of viral shedding by fitting log-normal models accounting for interval censoring. Results: We identified 115 relevant papers and obtained data from 66 (57.4%) - representing a total of 1198 patients across 14 countries. SARS-CoV-2 viral load peaks prior to symptom onset and remains elevated for up to three weeks, while MERS-CoV and SARS-CoV viral loads peak after symptom onset. SARS-CoV-2, MERS-CoV, and SARS-CoV had median viral shedding durations of 4.8, 4.2, and 1.2 days after symptom onset. Disease severity, age, and specimen type all have an effect on viral load, but sex does not. Discussion: Using a pooled analysis of the largest collection of IPD on viral load to date, we are the first to report that SARS-CoV-2 viral load peaks prior to -- not at -- symptom onset. Detailed estimation of the trajectories of viral load and virus shedding can inform the transmission, mathematical modeling, and clinical implications of SARS-CoV-2, MERS, and SARS infection.
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Background: No specific medication has been proven effective for the treatment of patients with severe coronavirus disease 2019 (COVID-19). Here, we tested whether high-dose vitamin C infusion was effective for severe COVID-19. Methods: This randomized, controlled, clinical trial was performed at 3 hospitals in Hubei, China. Patients with confirmed severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection in the ICU were randomly assigned in as 1:1 ratio to either the high-dose intravenous vitamin C (HDIVC) or the placebo. HDIVC group received 12 g of vitamin C/50 ml every 12 hours for 7 days at a rate of 12 ml/hour, and the placebo group received bacteriostatic water for injection in the same way. The primary outcome was invasive mechanical ventilation-free days in 28 days(IMVFD28). Secondary outcomes were 28-day mortality, organ failure, and inflammation progression. Results: Only fifty-six critical COVID-19 patients were ultimately recruited due to the early control of the outbreak. There was no difference in IMVFD28 between two groups. During the 7-day treatment period, patients in the HDIVC group had a steady rise in the PaO2/FiO2 (day 7: 229 vs. 151 mmHg, 95% CI 33 to 122, P=0.01). Patients with SOFA scores ≥3 in the HDIVC group exhibited a trend of reduction in 28-day mortality (P=0.06) in univariate survival analysis. IL-6 in the HDIVC) group was lower than that in the placebo group (19.42 vs. 158.00; 95% CI -301.72 to -29.79; P=0.04) on day 7. Conclusion: This pilot trial showed that HDIVC might show a potential signal of benefit for critically ill patients with COVID-19, improving oxygenation even though it failed to improve IMVFD28. Clinicaltrial.gov identifer and date: NCT04264533. Registered February 14 2020.
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Background Ivermectin is one among several potential drugs explored for its therapeutic and preventive role in COVID-19 infection. The study was aimed to explore the association between ivermectin prophylaxis and development of COVID-19 infection among healthcare workers. Methods A hospital-based matched case-control study was conducted among healthcare workers of AIIMS Bhubaneswar, India, from September to October 2020. Profession, gender, age and date of diagnosis were matched for 186 case-control pairs. Cases and controls were healthcare workers who tested positive and negative, respectively, for COVID-19 by RT-PCR. Exposure was defined as the intake of ivermectin and/or hydroxychloroquine and/or vitamin-C and/or other prophylaxis for COVID-19. Data collection and entry was done in Epicollect5, and analysis was performed using STATA version 13. Conditional logistic regression models were used to describe the associated factors for COVID-19 infection. Results Ivermectin prophylaxis was taken by 77 controls and 38 cases. Two-dose ivermectin prophylaxis (0.27, 95% CI, 0.15-0.51) was associated with 73% reduction of COVID-19 infection among healthcare workers for the following one month, those who were involved in physical activity (3.06 95% CI, 1.18-7.93) for more than an hour/day were more likely to contract COVID-19 infection. Type of household, COVID duty, single-dose ivermectin prophylaxis, vitamin-C prophylaxis and hydroxychloroquine prophylaxis were not associated with COVID-19 infection. Conclusion Two-dose ivermectin prophylaxis at a dose of 300 μg/kg with a gap of 72 hours was associated 73% reduction of COVID-19 infection among healthcare workers for the following one-month. Further research is required before its large scale use.
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Background: In hospitalized patients with coronavirus disease 2019 (COVID-19) pneumonia, progression to acute respiratory failure requiring invasive mechanical ventilation (MV) is associated with significant morbidity and mortality. Severe dysregulated systemic inflammation is the putative mechanism. We hypothesize that early prolonged methylprednisolone (MP) treatment could accelerate disease resolution, decreasing the need for intensive care unit (ICU) admission and mortality. Methods: We conducted a multicenter observational study to explore the association between exposure to prolonged, low-dose MP treatment and need for ICU referral, intubation, or death within 28 days (composite primary end point) in patients with severe COVID-19 pneumonia admitted to Italian respiratory high-dependency units. Secondary outcomes were invasive MV-free days and changes in C-reactive protein (CRP) levels. Results: Findings are reported as MP (n = 83) vs control (n = 90). The composite primary end point was met by 19 vs 40 (adjusted hazard ratio [aHR], 0.41; 95% CI, 0.24-0.72). Transfer to ICU and invasive MV were necessary in 15 vs 27 (P = .07) and 14 vs 26 (P = .10), respectively. By day 28, the MP group had fewer deaths (6 vs 21; aHR, 0.29; 95% CI, 0.12-0.73) and more days off invasive MV (24.0 ± 9.0 vs 17.5 ± 12.8; P = .001). Study treatment was associated with rapid improvement in PaO2:FiO2 and CRP levels. The complication rate was similar for the 2 groups (P = .84). Conclusion: In patients with severe COVID-19 pneumonia, early administration of prolonged MP treatment was associated with a significantly lower hazard of death (71%) and decreased ventilator dependence. Treatment was safe and did not impact viral clearance. A large randomized controlled trial (RECOVERY trial) has been performed that validates these findings. Clinical trial registration. ClinicalTrials.gov NCT04323592.
Article
FDA approved for parasitic indications, the small molecule ivermectin has been the focus of growing attention in the last 8 years due to its potential as an antiviral. We first identified ivermectin in a high throughput compound library screen as an agent potently able to inhibit recognition of the nuclear localizing Human Immunodeficiency Virus-1 (HIV-1) integrase protein by the host importin (IMP) α/β1 heterodimer, and recently demonstrated its ability to bind directly to IMPα to cause conformational changes that prevent its function in nuclear import of key viral as well as host proteins. Cell culture experiments have shown robust antiviral action towards a whole range of viruses, including HIV-1, dengue, Zika and West Nile Virus, Venezuelan equine encephalitis virus, Chikungunya, pseudorabies virus, adenovirus, and SARS-CoV-2 (COVID-19). Close to 70 clinical trials are currently in progress worldwide for SARS-CoV-2. Although few of these studies have been completed, the results that are available, as well as those from observational/retrospective studies, indicate clinical benefit. Here we discuss the case for ivermectin as a host-directed broad-spectrum antiviral agent, including for SARS-CoV-2.
Preprint
The timing of SARS-CoV-2 transmission is a critical factor to understand the epidemic trajectory and the impact of isolation, contact tracing and other non- pharmaceutical interventions on the spread of COVID-19 epidemics. We examined the distribution of transmission events with respect to exposure and onset of symptoms. We show that for symptomatic individuals, the timing of transmission of SARS-CoV-2 is more strongly linked to the onset of clinical symptoms of COVID-19 than to the time since infection. We found that it was approximately centered and symmetric around the onset of symptoms, with three quarters of events occurring in the window from 2-3 days before to 2-3 days after. However, we caution against overinterpretation of the right tail of the distribution, due to its dependence on behavioural factors and interventions. We also found that the pre-symptomatic infectious period extended further back in time for individuals with longer incubation periods. This strongly suggests that information about when a case was infected should be collected where possible, in order to assess how far into the past their contacts should be traced. Overall, the fraction of transmission from strictly pre-symptomatic infections was high (41%; 95%CI 31-50%), which limits the efficacy of symptom-based interventions, and the large fraction of transmissions (35%; 95%CI 26-45%) that occur on the same day or the day after onset of symptoms underlines the critical importance of individuals distancing themselves from others as soon as they notice any symptoms, even if they are mild. Rapid or at-home testing and contextual risk information would greatly facilitate efficient early isolation.