Journal of global infectious diseases (J Glob Infect Dis)

Publisher: Medknow Publications

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ISSN 0974-8245

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Medknow Publications

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Publications in this journal

  • Journal of global infectious diseases 02/2015; DOI:10.4103/0974-777X.150890
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    ABSTRACT: A retrospective analysis was done over a period of 3 years (January 2010- December 2012) in a tertiary care hospital, Pune, to note the changes in the prevalence and distribution of biotypes, serotypes, antibiotic susceptibility pattern and phage types of Vibrio cholerae isolates from clinical samples so as to be vigilant and curtail major outbreak in future. Vibrio cholerae isolates were obtained from 4.4% of the 1126 fecal specimens processed from cases of acute watery diarrhea. Majority of the isolates were identified as V. cholerae O1 biotype El Tor serotype Ogawa (98%); Phage 27 was the predominant type (77.5%). Majority of the cases were encountered during the months June-August (68%). Antibiogram over a period of 3 years showed that isolates were consistently resistant to Ampicillin (90%) and Furazolidone (88%). Low level of resistance was seen with Norfl oxacin (8%), Gentamicin (8%) and Tetracycline (6%). All isolates were susceptible to Chloramphenicol.
    Journal of global infectious diseases 01/2015; 7(1):34-36. DOI:10.4103/0974-777X.146375
  • Journal of global infectious diseases 01/2015; 7(1):46-7. DOI:10.4103/0974-777X.150892
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    ABSTRACT: Tuberculosis (TB) remains a serious public health problem worldwide. The emergence of drug resistance and multidrug resistance (MDR) has become the main threat to TB treatment and control programs. Rapid detection is critical for the effective treatment of patients. In recent times, a new method using the colorimetric indicator resazurin has been proposed for drug susceptibility of Mycobacterium tuberculosis. In this study, the resazurin reduction assay was adapted to screw cap tubes. Using the Resazurin Tube Method (RTM), a total of 100 clinical isolates were tested against Rifampicin (RIF) and Isoniazide (INH). By visual reading, the minimum inhibitory concentrations (MICs) were obtained after eight days. The results obtained were compared with the gold standard proportion method. Excellent results were obtained for RTM with a sensitivity of 100% for both RIF and INH, with a specificity of 98.7 and 95.3%, respectively. Kappa is the measure of agreement between the RTM and proportion method (PM) for RIF and INH, which was found to be 0.972 and 0.935 for RIF and INH, respectively. The RTM appears to be a reliable method for the rapid and simultaneous detection of MDR-TB and drug susceptibility testing (DST) of M. tuberculosis. It is simple, inexpensive, and with no biohazard risk involved.
    Journal of global infectious diseases 10/2014; 6(4):151-6. DOI:10.4103/0974-777X.145239
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    ABSTRACT: Kikuchi-Fujimoto disease is an uncommon disorder with worldwide distribution, characterized by fever and benign enlargement of the lymph nodes, primarily affecting young adults. Awareness about this disorder may help prevent misdiagnosis and inappropriate investigations and treatment. The objective of the study was to evaluate the clinical and laboratory characteristics of histopathologically confirmed cases of Kikuchi's disease from a tertiary care center in southern India. Retrospective analysis of all adult patients with histopathologically confirmed Kikuchi's disease from January 2007 to December 2011 in a 2700-bed teaching hospital in South India was done. The clinical and laboratory characteristics and outcome were analyzed. There were 22 histopathologically confirmed cases of Kikuchi's disease over the 5-year period of this study. The mean age of the subjects' was 29.7 years (SD 8.11) and majority were women (Male: female- 1:3.4). Apart from enlarged cervical lymph nodes, prolonged fever was the most common presenting complaint (77.3%). The major laboratory features included anemia (54.5%), increased erythrocyte sedimentation rate (31.8%), elevated alanine aminotransferase (27.2%) and elevated lactate dehydrogenase (LDH) (31.8%). Even though rare, Kikuchi's disease should be considered in the differential diagnosis of young individuals, especially women, presenting with lymphadenopathy and prolonged fever. Establishing the diagnosis histopathologically is essential to avoid inappropriate investigations and therapy.
    Journal of global infectious diseases 10/2014; 6(4):147-50. DOI:10.4103/0974-777X.145234
  • Journal of global infectious diseases 10/2014; 6(4):195-6. DOI:10.4103/0974-777X.145260
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    ABSTRACT: The aim of study was to find out the potential pathogenic role of virulence factors elaborated by strains of vancomycin resistant enterococci (VRE) isolated from clinical samples and VRE colonizing the gastrointestinal tract of hospitalized patients. Enterococci were isolated from various clinical samples and also from fecal specimens of colonized patients at the time of admission, after 48 h and after 5 days of admission. Various virulence determinants were detected by phenotypic tests. Vancomycin susceptibility in enterococci was detected by disc diffusion and agar screen method. Minimum inhibitory concentration was determined by agar dilution method. Out of all the clinical and fecal samples processed, 12.0% isolates were either vancomycin resistant or vancomycin intermediate. Hemagglutinating activity against rabbit red blood cells was seen with 27.8% and 25.0% of clinical and fecal strains, respectively. Slime layer formation was seen with fecal VRE strains (37.5%) when compared to clinical VRE (27.8%). Among the clinical VRE strains the most prolific biofilm producers were Enterococcus. fecalis (92.9%) when compared to Enterococcus. faecium (52.9%). Biofilm formation/(presence of adhesions) was also seen in (29.2%) of the fecal VREs. In wound infection production of gelatinase, deoxyribonuclease (DNase), and caseinase (70.0% each) were the major virulence factors. The predominant virulence factors seen in the blood stream infection were adhesin, and hemolysin (44.4% each) and in catheter induced infection were DNase and adhesins (75.0% each). Adhesin (29.2%), slime layer (37.6%), DNAse (33.3%), gelatinase (25.0%), lipase (20.8%) and caseinase (16.6%) and hemolysin (8.3%) were produced the fecal isolates. An association between adhesin (as detected by biofilm formation) and urinary tract infection, adhesion and hemolysin with BSI, as also between DNase gelatinase & caseinase with wound infection was noted.
    Journal of global infectious diseases 10/2014; 6(4):157-63. DOI:10.4103/0974-777X.145242
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    ABSTRACT: Drug resistance to Pseudomonas sp. has spread to such a level irrespective of the type of patients, that its pattern of distribution and antibiotic resistance needs to be studied in detail, especially in trauma patients and hence the study. A 6 year study was carried out among trauma patients to see the trend and type of resistance prevalent in the apex hospital for trauma care in India among nonduplicate isolates where multidrug-resistance (MDR), cross-resistance and pan-drug resistance in Pseudomonas sp. were analyzed. Of the total 2,269 isolates obtained, the species, which was maximally isolated was Pseudomonas aeruginosa (2,224, 98%). The highest level of resistance was seen in tetracycline (2,166, 95.5%, P < 0.001) and chloramphenicol (2,160, 95.2%, P < 0.001) and least in meropenem (1,739, 76.7%, P < 0.003). Of the total, 1,692 (74.6%) isolates were MDR in which P. aeruginosa (75%) were maximum. MDR Pseudomonas is slowing increasing since the beginning of the study period. Of 1,797 imipenem-resistant P. aeruginosa isolated during the study period, 1,763 (98%) showed resistance to ciprofloxacin or levofloxacin, suggesting that cross-resistance may have developed for imipenem due to prior use of fluoroquinolones. Antibiotic resistance in Pseudomonas sp. is fast becoming a problem in trauma patients, especially in those who requires prolong hospital stay, which calls for proper antimicrobial stewardship.
    Journal of global infectious diseases 10/2014; 6(4):182-5. DOI:10.4103/0974-777X.145250
  • Journal of global infectious diseases 10/2014; 6(4):194-5. DOI:10.4103/0974-777X.145256
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    ABSTRACT: Dealing with severe blood stream infections (BSI) is one of the intractable conditions in hospitals. The empirical treatment given remains pertinent in determining patient outcome, which becomes evidence based when substantiated by knowledge of susceptibility patterns of prevalent pathogenic organisms in the set up. This study was undertaken to determine the occurrence, species prevalence, and antibiotic susceptibility pattern of laboratory confirmed BSI (LCBSI) in patients admitted to our multi-specialty sanatorium. Eight hundred and forty-six blood samples from 829 patients suspected of having BSI were cultured as per standard microbiological procedures. Antimicrobial susceptibility testing was done for bacterial isolates from positive blood cultures. Sixty (7.2%) cases were established as LCBSI. A total of eight pathogenic bacterial genera were identified and their antimicrobial susceptibility pattern was noted. Staphylococcus spp. were most prevalent (33%), followed by Klebsiella pneumoniae (20%), Escherichia coli (13%), Acinetobacter spp. (13%), Enterococcus spp. (12%), Pseudomonas aeruginosa (3%), Proteus spp. (2%), and Citrobacter spp. (2%). The study shows the prevalence of common bacterial pathogens causing BSI and their susceptibility patterns. Such studies provide benefit of instantaneous choice of antibiotic therapy aiming at improved patient management and reduced drug resistance.
    Journal of global infectious diseases 10/2014; 6(4):141-6. DOI:10.4103/0974-777X.145231
  • Journal of global infectious diseases 07/2014; 6(3):135-6. DOI:10.4103/0974-777X.138515
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    ABSTRACT: Fatal-disseminated Bacillus Calmette Guerin (BCG) disease is well known in infants with severe combined immunodeficiency after BCG vaccination. We report a 7 month male infant delivered as a product of in vitro fertilization and twin gestation that presented with fever, cough and multiple nodular skin lesions. A biopsy of skin lesions revealed the presence of acid fast bacilli. Mycobacterium bovis infection was confirmed by polymerase chain reaction (PCR) and molecular studies. Immunological profile confirmed the diagnosis of severe combined immunodeficiency. Only few reports of similar case exist in the literature.
    Journal of global infectious diseases 07/2014; 6(3):132-4. DOI:10.4103/0974-777X.138514
  • Journal of global infectious diseases 07/2014; 6(3):93-4. DOI:10.4103/0974-777X.138495
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    ABSTRACT: Periorbital soft tissue swelling may result due to primary orbital pathology or from adjacent facio-maxillary or sino-nasal inflammatory causes. Osteomyelitis of maxilla in the pediatric age group is a rare entity in this era of antibiotics. We present an 11-month-old female infant who was brought with peri-orbital selling and purulent nasal discharge. Computed Tomography showed erosions of the walls of maxillary sinus suggestive of osteomyelitis. Culture of sinus scraping showed Staphylococcus aureus growth and the child improved with intravenous cloxacillin therapy. This case is presented due to the rarity of its presentation in this age group and for awareness to consider this entity in children having fever and peri-orbital swelling.
    Journal of global infectious diseases 07/2014; 6(3):125-7. DOI:10.4103/0974-777X.138511
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    ABSTRACT: Introduction:Dengue is one of the most important arboviral infections caused by one of the four dengue serotypes, 1-4.Objective:To study the applicability of different diagnostic methods in diagnosis of dengue viral infection.Materials and Methods:A total of 2101 blood samples were collected for confirmation of dengue viral infection. All the samples were tested by dengue-specific IgM ELISA, of which 111 were also tested for NS1 antigen detection and 27 acute samples (≤5 days) were further subjected for viral RNA detection by RT-PCR and isolation in C6/36 cell line. To detect the sensitivity of NS1 antigen for different dengue virus serotypes, four dengue serotype 1 and 12 dengue 3 were subjected for the NS1 antigen assay.Results:Most common age group affected was 16-45 years, with male to female ratio of 2.8:1. During first 3 days of illness virus isolation and RT-PCR were the most sensitive (83%) followed by NS1 antigen detection (75%) and IgM detection (37.5%). The positivity of IgM detection was found to be significantly higher as compared to NS1 detection during 4 to 5 days and also after 5 days of illness (P < 0.05). Dengue serotypes 1 and 3 were found to be co-circulated, dengue 1 being the predominant serotype.Conclusion:Virus isolation and RT-PCR were the most sensitive tests during the early period of illness whereas beyond third day, IgM antibody detection was found to be the most sensitive method of dengue diagnosis.
    Journal of global infectious diseases 07/2014; 6(3):109-13. DOI:10.4103/0974-777X.138504
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    ABSTRACT: Introduction:Hepatitis B virus (HBV) is a parenterally transmitted viral illness of significant public health importance. The prevalence of HBV related viral hepatitis still remains debatable.Objectives:The objective of the following study is to determine the magnitude and pattern of HBV infection in clinically suspected infectious hepatitis at a tertiary care hospital in urban India.Materials and Methods:This prospective study was conducted in the Department of Microbiology at Lady Hardinge Medical College, New Delhi, over a period of 1 year from January 2008 to December 2008. All the serum samples taken from subjects (600 study and 200 control) were tested for hepatitis B surface antigen (HBsAg) using commercially available enzyme linked immunosorbent assay kit. Serum samples testing positive for HBsAg were tested for hepatitis B e antigen, immunoglobulin M (IgM) capture anti hepatitis D virus (HDV), IgM anti hepatitis B surface and IgM anti hepatitis B core.Results:24 (4%) serum samples tested positive for HBsAg in the study group while 5 (2.5%) tested positive in the control. Maximum seropositivity of HBsAg was in 20-30 years of age group in the study group (7.6%) followed by 11-20 years (4.5%), 0-10 years (2.8%) and >40 years (2.5%). The difference in seropositivity in study and control group was statistically insignificant in all the age groups (P > 0.05). Out of 24 cases positive for HBsAg, 4 cases (16.6%) were co infected with HDV in study group while there were none in control group.Conclusions:HBV is a common cause of parenterally transmitted viral hepatitis and hence, it is recommended that measures for public awareness regarding safe infection practices and safe sex practices should be undertaken to limit its spread.
    Journal of global infectious diseases 07/2014; 6(3):105-8. DOI:10.4103/0974-777X.138502