Roseric Azondekon- Doctor of Philosophy
- Fellow at Centers for Disease Control and Prevention
Roseric Azondekon
- Doctor of Philosophy
- Fellow at Centers for Disease Control and Prevention
Public Health Informatics Specialist, Epidemiologist & Medical Entomologist
About
63
Publications
33,719
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1,263
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Introduction
I am a qualified Medical Informaticist, Epidemiologist, and Medical Entomologist with strong background in independent and group laboratory research. I have a long tenure in malaria entomology research. In addition, I am experienced in research and survey design. I have good reporting skills including manuscript writing, and Standard Operating Procedure design and Implementation. With a PhD in Biomedical and Health Informatics, I am dedicated to expanding knowledge and experience to contribute to improving human health and welfare. Such knowledge expansion involved various Bioinformatics, Global and Public Health Informatics projects I have initiated and conducted.
Current institution
Additional affiliations
August 2019 - present
Position
- Fellow
Description
- Syndrome development and evaluation, Natural Language Processing Methods for use with Syndromic Data, Mortality Data Source Development, Syndromic Surveillance.
November 2018 - July 2019
University of Wisconsin - Milwaukee
Position
- Analyst
Description
- Genomics Data Analysis, Scientific Computing, Shiny app development, Differential Gene Analysis.
September 2016 - April 2018
Position
- Research Assistant
Description
- Machine Learning, Deep Learning, GPU computing, MEG, EEG, fNIRS and fMRI data processing and analysis.
Education
September 2014 - August 2018
September 2012 - May 2014
December 2007 - March 2010
Publications
Publications (63)
Abstract Background Following a mass distribution of long-lasting insecticidal nets (LLINs) in Benin, we used WHO guidelines to develop an assessment tool which is described in this report. It involved assessment of the three WHO indicators: survivorship, integrity and bio-efficacy. Methods To evaluate the assessment tool, we selected four communit...
Background
To sustain the critical progress made, prioritization and a multidisciplinary approach to malaria research remain important to the national malaria control program in Benin. To document the structure of the malaria collaborative research in Benin, we analyze authorship of the scientific documents published on malaria from Benin.
Methods...
Multidisciplinary approach to malaria research remain important to the national malaria control program in Benin. To unravel the mechanism underlying the establishment of research collaboration ties in malaria research in Benin, we model the complexity and dynamics of the malaria research co-authorship network of Benin using Exponential Random Grap...
Malaria is the deadliest mosquito-borne disease and kills predominantly people in sub-Saharan Africa (SSA). The now widespread mosquito resistance to pyrethroids, with rapidly growing resistance to other insecticide classes recommended by the World Health Organization (WHO), may overturn the successes gained in mosquito control in recent years. It...
During March 29-April 25, 2020, emergency department (ED) visits in the United States declined by 42% after the declaration of a national emergency for COVID-19 on March 13, 2020. Among children aged ≤10 years, ED visits declined by 72% compared with prepandemic levels (1). To assess the continued impact of the COVID-19 pandemic on EDs, CDC examine...
Background
Several studies have been conducted in Benin over the past two decades on insecticide resistance in mosquito vectors. These studies, by various authors, lead to diverse and scattered data. The present paper provides a retrospective analysis of these data to assess the current state of insecticide resistance and its evolution over two dec...
Background
Insecticide resistance amongst vector populations is a major challenge, exacerbated by the continued use of the same active ingredients. The present study assessed the impact of long-lasting insecticidal nets (LLINs) bi-treated with chlorfenapyr-alphacypermethrin (PY-CFP LLIN) or pyriproxyfen-alphacypermethrin (PY-PPF LLIN) on the geneti...
From 2019 to 2021, pirimiphos-methyl, clothianidin + deltamethrin, and clothianidin alone were successively used to protect communities in
the Donga and Alibori departments against mosquito bites. This study aims to analyze the genetic structure of Anopheles coluzzii and Anopheles
gambiae over three years of intervention.
The vector population stud...
Background
This study investigates the effectiveness of new-generation mosquito nets, like Olyset® Plus and PermaNet® 3.0, and dual-action nets such as Interceptor® G2, against pyrethroid-resistant Anopheles gambiae mosquitoes following the 2023 mass distribution of long-lasting insecticidal nets in Benin.
Methods
We tested wild mosquito populatio...
Updated information on the distribution and abundance of Aedes aegypti and Aedes albopictus is crucial to prepare African countries, such as Benin, for possible arboviral disease outbreaks. This study aims to evaluate the geographical distribution, abundance and biting behaviour of these two vectors in Benin. Three sampling techniques were used in...
Background
Updated information on the distribution and abundance of Aedes aegypti and Aedes albopictus is crucial to prepare African countries like Benin for possible arbovirus outbreaks. This study aims to evaluate the geographical distribution, the abundance, and the biting behaviors of these two vectors in Benin.
Methods
Three sampling techniqu...
Background
In the United States, national ecological studies suggest a positive impact of COVID-19 vaccination coverage on outcomes in adults. However, the national impact of the vaccination program on COVID-19 in children remains unknown. To determine the association of COVID-19 vaccination with U.S. case incidence, emergency department visits, an...
Background
In the United States, national ecological studies suggest a positive impact of COVID-19 vaccination coverage on outcomes in adults. However, the national impact of the vaccination program on COVID-19 in children remains unknown. To determine the association of COVID-19 vaccination with U.S. case incidence, emergency department visits, an...
Importance:
The COVID-19 pandemic has negatively affected adult mental health (MH), with racial and ethnic minoritized groups disproportionately affected.
Objective:
To examine changes in adult MH-related emergency department (ED) visits into the Delta variant pandemic period and identify changes and inequities in these visits before and during...
The present study investigated in 8 villages of the Plateau region the coverage, usage, physical integrity, and bio-efficacy of the Olyset nets distributed nationwide by the Benin's National Malaria Control Programme in July 2011. The questionnaire administered as well as the observations made in the households allowed estimating the coverage and u...
Background
Respiratory tract infections are common, often seasonal, and caused by multiple pathogens. We assessed whether seasonal respiratory illness patterns changed during the COVID-19 pandemic.
Methods
We categorized emergency department (ED) visits reported to the National Syndromic Surveillance Program according to chief complaints and diagn...
Background:
Long-lasting insecticidal nets (LLINs) are designed to survive and sustain their physical barrier for 3 years in household conditions. However, studies have shown that most of these nets are usually torn or no longer present in the households in less than 3 years. This study was initiated in Benin to compare the survivorship and physic...
Context: Recent publications on WHO recommended methods for estimating the survival of LLINs are good guidelines for assessing the performance of long-lasting insecticidal nets (LLINs). Thus, this field trial study was under-taken to evaluate the durability of the Yorkool ® LN mosquito net distributed during the 2017 campaign in Benin. Methods: The...
Abstract Background Changes in the natural habitats of insect groups are determined the genetic polymorphisms between individuals. The objective of this study was to establish the genetic structure of the Anopheles coluzzii populations in four localities of Benin. Methods Insecticide surveys and larval sampling were conducted on 4 study localities,...
Background The effectiveness of long-lasting insecticidal nets (LLINs) mainly relies on their physical integrity, an important indicator of the LLINs durability in households. The present study aims to assess this physical integrity for three widely used LLIN products: DawaPlus®2.0, PermaNet®2.0 (polyester) and DuraNet® (polyethylene), distributed...
Multidisciplinary approach to malaria research remains important to the national malaria control program in Benin. To unravel the mechanism underlying the establishment of research collaboration ties in malaria research in Benin, we model the complexity and dynamics of the malaria research co-authorship network of Benin using Exponential Random Gra...
Background
Despite the success of indoor residual insecticide spraying (IRS) in Africa, particularly in Benin, some gaps of information need to be filled to optimize the effectiveness of this intervention in the perspective of the country’s effort to eliminate malaria. In anticipation to the 2018 IRS campaign in two targeted regions of northern Ben...
Despite the international mobilization and increase in research funding, Malaria, Tuberculosis and HIV/AIDS are three infectious diseases that have claimed more lives in sub Saharan Africa than any other place in the World. Consortia, research network and research centers both in Africa and around the world team up in a multidisciplinary and transd...
Estimated connectomes by the means of neuroimaging techniques have enriched our knowledge of the organizational properties of the brain leading to the development of network-based clinical diagnostics. Unfortunately, to date, many of those network-based clinical diagnostics tools, based on the mere description of isolated instances of observed conn...
Background:
Scale-up of the distribution of long-lasting insecticide-treated bed nets and indoor residual spraying with insecticides over the last decade have contributed to the considerable decrease of malaria morbidity and mortality in sub-Saharan Africa. Due to the increasing pyrethroid resistance intensity and the spread of carbamate resistanc...
To sustain the critical progress made, prioritization and a multidisciplinary approach to malaria research remain important to the national malaria control program in Benin. To document the structure of the malaria collaborative research in Benin, we analyze authorship of the scientific documents published on malaria from Benin from January 1996 to...
Since the first evidence of pyrethroids resistance in 1999 in Benin, mutations have rapidly increased in mosquitoes and it is now difficult to design a study including a control area where malaria vectors are fully susceptible. Few studies have assessed the after effect of resistance on the success of pyrethroid based prevention methods in mosquito...
Summary of results for host-seeking An.gambiae s.l in experimental huts (6 months data collected after treatment in Malanville).
(DOC)
Abstract Background Polovodova method based on counting follicular dilatations estimates the number of egg-laying in mosquitoes. However, some researchers doubt the reliability of this method because of the absence of multiple dilatations in vectors after many gonotrophic cycles. It is in this context of controversy that our study was carried out t...
Background: Infection with hepatitis C virus (HCV) and human immunodeficiency virus (HIV) are estimated to affect 185 and 35 million of the world’s population, respectively. Due to share transmission routes, co-infection is common and can negatively affect the natural course of chronic hepatitis C infection as well as accelerate liver toxicity in H...
From 2008 to 2013, a prevention intervention against malaria based on indoor residual spraying (IRS) was implemented in Benin. From 2008 to 2012, Ficam M®, a bendiocarb-containing product was used for house spraying, in association with pirimiphos methyl EC (Actellic EC) in 2013. This operation aimed to strengthen the effectiveness of treated nets...
Insecticides are widely used to control malaria vectors and have significantly contributed to the reduction of malaria-caused mortality. In addition, the same classes of insecticides were widely introduced and used in agriculture in Benin since 1980s. These factors probably contributed to the selection of insecticide resistance in malaria vector po...
Background Polovodova method based on counting follicular dilatations estimates the number of egg-laying in mosquitoes. However, some researchers doubt the reliability of this method because of the absence of multiple dilatations in vectors after many gonotrophic cycles. It is in this context of controversy that our study was carried out to evaluat...
The conventional dilaceration of ovaries is binding at the beginning of ovary development. However, reading ovarian tracheoles was very easy in stage I-II mean. The combination of both methods can really reduce the number of age indeterminations recorded with the two methods separately. The present study aimed to identify a method capable of determ...
To better control malaria, the clear and urgent need is for improved data to inform decision makers, but in several African countries, there is a lack of baseline data on vectors and variation in the intensity of malaria transmission. This has resulted in the implementation of vector control efforts that ignore variation in vector behaviour and int...
Introduction: HIV/AIDS remains a very serious public health problem, affecting over 33 million people globally. Because its route of transmission is similar to hepatitis C virus (HCV), co-infection is often common. In highly endemic populations such as Africa where the extent of HCV and HIV/AIDS co-infection remains unknown, a quantitative estimate...
Objective:
To determine the efficacy of WHO impregnated paper and CDC coated bottle based on number of storage days and number of times of consecutive use, in the assessment of insecticide vector susceptibility tests in laboratory and field conditions.
Methods:
Larvae and pupae of Anopheles gambiae s.l. mosquitoes were collected from the breedin...
Anopheles gambiae, which is the main malaria vector in Benin has developed high level of resistance to pyrethroid insecticides. This raises serious concerns to the future use of long-lasting insecticidal nets (LLIN) and indoor residual spraying (IRS). It is therefore important to seek better and effective resistance management strategies which will...
Objective:
To investigate what kind of mosquito sample is necessary for the determination of insecticide susceptibility in malaria vectors.
Methods:
Larvae and pupae of Anopheles gambiae s.l. (An. gambiae) mosquitoes were collected from the breeding sites in Littoral and Oueme departments. The Centers for Disease Control and Prevention (CDC) sus...
The dynamics of mosquito populations depends on availability of suitable surface water for oviposition. It is well known that suitable management of mosquito larval habitats in the sub-Saharan countries, particularly during droughts, could help to suppress vector densities and malaria transmission. We conducted a field survey to investigate the spa...
In order to investigate the complementarities between both World Health Organization (WHO) and Centre for Disease Control and Prevention (CDC) methods and the specificities of each method useful for the determination of the insecticide susceptibility in malaria vectors, larvae and pupae of Anopheles gambiae s.l. mosquitoes were collected from the b...
As a result of the free-insecticide treated net distribution by National Malaria Control Programme (NMCP) in July 2011 throughout the entire country, it is useful to investigate the dynamics of insecticide resistance in Anopheles gambiae from Benin and the metabolic resistance mechanisms involved in this evolution of resistance. Larvae and pupae of...
This study aims to research two areas, one with a resistant and the other with a susceptible profile of An. gambiae to deltamethrin in the region of Plateau (southern Benin). In each area, eight localities were sought. Both areas were needed for the assessment of the impact of malaria vector resistance to pyrethroids on the effectiveness of Long La...
In arid settings, droughts usually lead to periods of very low or no malaria transmission. However, in rural Kandi (Sonsoro) in northeastern Benin, several malaria cases are often diagnosed during dry seasons. The underlying factors accounting for this phenomenon remain unknown.
The entomological profile of Sonsoro has been studied compared to a lo...
LLIN distribution, every three years, is a key intervention of Benin's malaria control strategy. However, data from the field indicate that LLIN lifespan appears to vary based on both intrinsic (to the LLIN) and extrinsic factors.
We monitored two indicators of LLIN durability, survivorship and integrity, to validate the three-year-serviceable-life...
Using the same insecticide for multiple successive indoor residual spraying (IRS) cycles is not recommended; instead, the National Malaria Control Program (NMCP) has decided to select another insecticide (insecticide B) in addition to bendiocarb for indoor residual spraying.
An experimental hut trial comparing the effectiveness of three classes of...
Permanet 2.0 distribution was made free in October, 2008 and May, 2009 in Oueme Department. OlysetNet distribution was also made free in July, 2011 throughout the entire country by Beninese National Malaria Control Programme to increase coverage of long-lasting insecticidal nets (LLINs). We investigated the dynamics of insecticide resistance in Ano...
Objective: To investigate what kind of mosquito sample is necessary for the insecticide susceptibility in malaria vectors. determination of Methods: Larvae and pupae of Anopheles gambiae s.l. (An. gambiae) mosquitoes were collected from the breeding sites in Littoral and Oueme departments. The Centers for Disease Control and Prevention (CDC) suscep...
The African malaria mosquito, Anopheles gambiae, depends on availability of suitable surface water for oviposition. The scarcity of breeding sites that characterizes droughts force gravid mosquitoes to delay oviposition and retain eggs in their ovaries. In laboratory conditions, we explored the possible consequences of preset duration of ovipositio...
A dynamic study on the transmission of malaria was conducted in two areas (R+ area: Low resistance area; R+++ area: High resistance area) in the department of Plateau in South Eastern Benin, where the population is protected by Long Lasting Insecticidal Nets (LLINs). The aim of this study was to determine if the resistance of malaria vectors to ins...
Studies indicate that physical damage to long-lasting insecticide-treated nets (LLINs) occurs at a surprisingly rapid rate following net distribution. To what extent does such damage affect the impact of LLINs? Can vectors pass a compromised LLIN barrier to bite? Do more resistant vectors enter the insecticide-treated nets (ITNs) through holes?
The...
![Diagram for performing the CDC bottle bioassay with synergists[13].](profile/Razaki-Osse/publication/236922526/figure/fig2/AS:202997662523393@1425409822245/Diagram-for-performing-the-CDC-bottle-bioassay-with-synergists13_Q320.jpg)
Background
The detection of insecticide resistance in natural populations of Anopheles vectors is absolutely necessary for malaria control. In the African region, the WHO insecticide susceptibility test is the most common method for assessing resistance status. In order to search for a simple, rapid and more reliable technique in the assessment of...
Background:
In many parts of Africa as in Benin, the main strategies of vector control are based on the scaling-up of Long Lasting Insecticide Treated Nets (LLITNs) and indoor residual spraying (IRS). The need to understand the biological implications of IRS in large scale and full coverage of LLITNs is paramount. It is in this context that the pr...
From 2008 to 2010, the National Malaria Control Program (NMCP) implemented Indoor Residual Spraying (IRS) for the first time in the department of Oueme, Benin. This large scale campaign which has prevented more than 350,000 people from mosquito bites was highly successful with a drastic drop of 94% of the Entomological Inoculation Rate. Stopping IR...
La diminution de la concentration des paramètres d’appréciation du sperme a soulevé le problème de la fertilité des hommes. La pollution de l’environnement est incriminée en grande partie dans cette infertilité. Dans la ville de Cotonou (BENIN), nous avons recherché au cours de la présente étude les effets du plomb et du cadmium sur la fertilité ma...
Indoor residual spraying (IRS) has been proposed by the National Malaria Control Programme of Benin
in the districts of Adjohoun, Dangbo, Misserete and Seme. Up to date entomological data are
unavailable in these districts. To be effective, this measure must be based on the knowledge of biology
of the malaria vectors. To achieve this aim, vector co...
Anopheles gambiae populations transmitting malaria in Benin, its distribution and susceptibility to insecticides are the main focus of National Malaria Control Program. This study was carried out through a transect in various ecological areas from the southern to the northern Benin. Overall,more than 40 localities were surveyed to establish the dis...
Questions
Questions (4)
I am currently analyzing collaboration networks in science. I have used SBM and ERGM to model a cumulative snapshot of the network. I know these methods alone are not sufficient to accurately model my network since it is a longitudinal network. I heard of Stochastic Actor-Based (or actor-oriented) Block Modeling (SABM) which can model my network taking into account it's dynamics in time. I have read some papers on it but have been unable to find a tutorial to guide me through its successful application on my data. Can anyone help?
Dear all, I just started a new project that requires the extraction of customer reviews from different online sources. I can do this manually but it will obviously be time consuming. Does anyone know a tool that automatically extracts customer reviews using internet?
Having recently started a text mining project, I have been struggling with an R package called 'sentiment' while performing a sentiment analysis. The package is only available in the archives of CRAN, seems outdated and was not compatible with the most recent version of R (on my computer). Does anyone know an alternative or even better R package for sentiment analysis?
There is a growing body of litterature regarding the use of Machine Learning Techniques to build a classifier. How can one come up with such a classifier in order to build a contry-wide prediction model of insecticide resistance in malaria vectors?
