Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 48
Filtrar
1.
Microbiol Spectr ; : e0084723, 2023 Sep 22.
Artigo em Inglês | MEDLINE | ID: mdl-37737637

RESUMO

Cefiderocol (FDC), a novel siderophore drug, is active against Gram-negative bacteria producing carbapenemases, including metallo-beta-lactamases. The objective of this study is to compare the in vitro activity of FDC with ceftazidime-avibactam (CZA), CZA/aztreonam (AT) combination, and colistin (CST), in clinical isolates of meropenem-resistant (MER-R) Klebsiella pneumoniae. From the 2,052 clinical specimens submitted for culture testing, 245 K. pneumoniae isolates were recovered within a 6-month period in 2021. One hundred three non-duplicate, non-outbreak, MER-R (minimum inhibitory concentration, MIC >4 µg/mL) strains were included in the study. Identification and susceptibility were performed using VITEK-2 (bioMérieux). Meropenem-susceptible isolates (n = 10) served as controls. For FDC, broth microdilution (BMD) was performed after in-house standardization. Disk diffusion (Liofilchem, Italy) and broth microdilution (ComASP, STC, Liofilchem, Italy) were used for susceptibility testing of CZA and CST, respectively. Synergy testing for CZA and AT was performed using disk approximation method. CLSI breakpoints were used for the interpretation of the results. For FDC, MIC50 and MIC90 were 2 and 8 µg/mL, respectively. A total of 80% of isolates were susceptible to FDC, 26.2% of isolates were susceptible to CZA, synergy testing with CZA/AT was positive for 74 (72%) of the isolates, and 89.3% were intermediate to CST. Nine (8.7%) were susceptible only to FDC. FDC is active in vitro against MER-R K. pneumoniae >CZA/AT > CZA > CST, as observed in this study, applying CLSI criteria. Clinico-microbiological studies should be performed to assess the clinical efficacy of this novel drug in this region with a high prevalence of carbapenem resistance among Gram-negative organisms. IMPORTANCE Management of infections with multi-drug resistant Klebsiella pneumoniae is a major challenge in hospital settings, with few treatment options. In this study, the authors aim to assess the in vitro susceptibility of these clinical isolates to cefiderocol, a novel siderophore. Comparators are colistin, ceftazidime-avibactam, and ceftazidime-avibactam/aztreonam synergy, which are currently available options for treatment in this region. Baseline-resistance rates against cefiderocol are higher than those in the previously published studies, with MIC50 and MIC90 at 2 and 8 µg/mL, respectively.

2.
Trans R Soc Trop Med Hyg ; 117(2): 91-101, 2023 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-36130240

RESUMO

BACKGROUND: Acute undifferentiated fever (AUF) ranges from self-limiting illness to life-threatening infections, such as sepsis, malaria, dengue, leptospirosis and rickettsioses. Similar clinical presentation challenges the clinical management. This study describes risk factors for death in patients hospitalized with AUF in India. METHODS: Patients aged ≥5 y admitted with fever for 2-14 d without localizing signs were included in a prospective observational study at seven hospitals in India during 2011-2012. Predictors identified by univariate analysis were analyzed by multivariate logistic regression for survival analysis. RESULTS: Mortality was 2.4% (37/1521) and 46.9% (15/32) died within 2 d. History of heart disease (p=0.013), steroid use (p=0.011), altered consciousness (p<0.0001), bleeding (p<0.0001), oliguria (p=0.020) and breathlessness (p=0.015) were predictors of death, as were reduced Glasgow coma score (p=0.005), low urinary output (p=0.004), abnormal breathing (p=0.006), abdominal tenderness (p=0.023), leucocytosis (p<0.0001) and thrombocytopenia (p=0.001) at admission. Etiology was identified in 48.6% (18/37) of fatal cases. CONCLUSIONS: Bleeding, cerebral dysfunction, respiratory failure and oliguria at admission, suggestive of severe organ failure secondary to systemic infection, were predictors of death. Almost half of the patients who died, died shortly after admission, which, together with organ failure, suggests that delay in hospitalization and, consequently, delayed treatment, contribute to death from AUF.


Assuntos
Malária , Tifo por Ácaros , Sepse , Humanos , Hospitais Comunitários , Oligúria , Febre/etiologia , Fatores de Risco , Malária/diagnóstico , Sepse/complicações , Índia/epidemiologia , Tifo por Ácaros/diagnóstico
3.
Cureus ; 14(11): e30971, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-36465196

RESUMO

Background Accurate interpretation of antibiotic susceptibility testing (AST) is one of the most crucial functions of the microbiology laboratory. However, its performance depends on a number of critical factors. We conducted a status survey to understand the existing practices in Indian laboratories that have a potential to influence performance of AST. Method We developed a 22-point online survey questionnaire on information about respondent's specifications, use of AST consumables, existing quality control protocols, and matters of contention in AST practices, and sent it by Google forms to 362 clinical microbiologists (holding MD or DNB certification). Participation was voluntary. Results were analyzed using descriptive statistics. Results Among 362, a total of 103 returned the questionnaire. The first 100 responses that were complete (all 22 questions answered) were analyzed. Respondents were from medical colleges (61%), private hospitals (26%), and stand-alone laboratories (13%). Analysis revealed that the Clinical & Laboratory Standards Institute (CLSI) guidelines were followed by all. Overall, 54% used disc diffusion as the primary method for performing AST. For the internal quality control testing of media and AST, 24% and 16% had adequate testing components and frequency, respectively. For performing AST of colistin, broth microdilution was used by 19%. Also, 86% participated in external quality control programs, and 54% respondents were dissatisfied or unsure about the development of competencies in AST methodology during their postgraduate training. Conclusion This survey reveals that potential gaps exist in the performance parameters and internal quality control of AST. There is an urgent need for harmonization in AST performance and postgraduate training in clinical microbiology in India.

4.
IJID Reg ; 3: 15-20, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35720136

RESUMO

Background: There was evidence that antibiotic usage increased in hospitalized COVID-19 patients during the early days of the pandemic. Objective: We assessed the impact of stewardship interventions on antibiotic usage in these patients. Methods: We designed a quasi-experimental study using an interrupted time series. Patients were stratified according to the severity category of the illness - mild and moderate-to-severe (O2 saturation ≥94% and <93% respectively). Baseline antibiotic usage data was collected in the pre-intervention phase. Intervention was given in the form of focus group discussion (FGD) and followed up with feedback-audit during the post-intervention phase. Primary outcome was the change in days of therapy (DOT) per 1000 patient-days. Results: 361 adult patients were recruited in both phases during July to December, 2020. In the post-intervention phase, DOT per 1000 patient-days reduced from 589 to 523 (P=0.013) and from 843 to 585 (P <0.0001) in mild and moderate-to-severe categories, respectively. De-escalations at 48 hours increased significantly from 21% to 41% (P=0.0079) and from 31% to 62% (P=0.0006), respectively. No difference in mortality was observed. Conclusion: We found high usage of empirical antibiotics in adult patients hospitalized with COVID-19. FGD and feedback audits can successfully reduce antibiotic overuse in these patients.

5.
BMC Med Educ ; 22(1): 380, 2022 May 18.
Artigo em Inglês | MEDLINE | ID: mdl-35585583

RESUMO

BACKGROUND: Undergraduate medical students in India participate in various research activities However, plagiarism is rampant, and we hypothesize that it is the lack of knowledge on how to avoid plagiarism. This study's objective was to measure the extent of knowledge and attitudes towards plagiarism among undergraduate medical students in India. METHODS: It was a multicentre, cross-sectional study conducted over a two-year period (January 2018 - December 2019). Undergraduate medical students were given a pre-tested semi-structured questionnaire which contained: (a) Demographic details; (b) A quiz developed by Indiana University, USA to assess knowledge; and (c) Attitudes towards Plagiarism (ATP) questionnaire. RESULTS: Eleven medical colleges (n = 4 government medical colleges [GMCs] and n = 7 private medical colleges [PMCs]) participated. A total of N = 4183 students consented. The mean (SD) knowledge score was 4.54 (1.78) out of 10. The factors (adjusted odds ratio [aOR]; 95% Confidence interval [CI]; p value) that emerged as significant predictors of poor knowledge score were early years of medical education (0.110; 0.063, 0.156; < 0.001) and being enrolled in a GMC (0.348; 0.233, 0.463; < 0.001).The overall mean (SD) scores of the three attitude components namely permissive, critical and submissive norms were 37.56 (5.25), 20.35 (4.20) and 31.20 (4.28) respectively, corresponding to the moderate category. CONCLUSION: The overall knowledge score was poor. A vast majority of study participants fell in the moderate category of attitude score. These findings warrant the need for incorporating formal training in the medical education curriculum.


Assuntos
Plágio , Estudantes de Medicina , Atitude , Estudos Transversais , Currículo , Ética em Pesquisa , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Índia , Inquéritos e Questionários
6.
Chest ; 161(6): 1543-1554, 2022 06.
Artigo em Inglês | MEDLINE | ID: mdl-35092747

RESUMO

BACKGROUND: Sepsis is a global health problem. Limited data exist on the prevalence of sepsis using current definitions in ICUs in India. RESEARCH QUESTION: In adult patients admitted to ICUs in India, what is the prevalence of sepsis using the previous (Second International Consensus Definitions for Sepsis and Septic Shock [Sepsis-2]) and current (Third International Consensus Definitions for Sepsis and Septic Shock [Sepsis-3]) definitions? STUDY DESIGN AND METHODS: Prospective, observational, multicentre, 1-day, cross-sectional study. The primary outcome was the sepsis prevalence using both the Sepsis-2 and Sepsis-3 definitions and their concordance (using Cohen's κ coefficient). Additional outcomes included reporting on current microbiological characteristics, antimicrobial use, multidrug-resistant infections, and 30-day discharge and mortality status in patients with sepsis. RESULTS: A total of 35 ICUs (85.7% private, 14.3% public) participated, enrolling 680 patients (median age, 60 years [interquartile range, 24 years]; 62.1% men). The most common primary diagnosis was renal disease, and common comorbidities were diabetes (44.0%) and chronic renal failure (11.6%). The sepsis prevalence on the study day was 382 of 677 patients (56.4%). Prevalence by Sepsis-3 and Sepsis-2 definitions was 33.2% and 46.2%, respectively, with minimal concordance (κ = 0.32). In patients with sepsis, the most common microorganisms were bacterial (77.9%) followed by fungal (14.1%) infections. Approximately 45% of infections were caused by multidrug-resistant organisms. Mortality at 30 days after the study day (27.6% vs 5.3%; P < .01) and rates of discharge against medical advice (12.8% vs 4.9%; P < .01) were significantly higher in the sepsis cohort compared with the cohort without sepsis, respectively. INTERPRETATION: This multicenter point prevalence study in Indian ICUs showed a high burden of sepsis using both Sepsis-2 and Sepsis-3 criteria, with associated high rates of antimicrobial resistance and mortality. These findings have implications for public health and future research.


Assuntos
Anti-Infecciosos , Sepse , Choque Séptico , Adulto , Estudos Transversais , Feminino , Mortalidade Hospitalar , Humanos , Unidades de Terapia Intensiva , Masculino , Pessoa de Meia-Idade , Prevalência , Estudos Prospectivos , Sepse/diagnóstico
7.
BMC Infect Dis ; 21(1): 675, 2021 Jul 12.
Artigo em Inglês | MEDLINE | ID: mdl-34247583

RESUMO

BACKGROUND: Oral human papillomavirus (HPV) infection has been causally linked to a subset of oropharyngeal cancers in Western populations, and both oropharyngeal cancer and oral HPV infection are increased among HIV-positive individuals. India has high incidences of oral and oropharyngeal cancers, and Indian HIV-positive men who have sex with men (MSM) may be at increased risk of developing oropharyngeal cancers. However, there is little information available on the prevalence of oral HPV in this population. METHODS: We tested 302 HIV-positive Indian MSM for oral HPV infection using L1 HPV DNA PCR with probes specific for 29 types and a mixture of 10 additional types. CD4+ level and plasma HIV viral load (VL) were measured. Participants completed an interviewer-administered questionnaire including a sexual history. RESULTS: The prevalence of oral HPV was 23.7% (95% CI: 19-29%) and 2.4% of participants had oncogenic HPV types. No participants had oral HPV type 16 (HPV-16) and the prevalence of other anogenital HPV types was low. Participants with higher CD4+ levels had reduced odds of having any oral HPV infection (OR: 3.1 [1.4-6.9]) in multivariable analyses. CONCLUSIONS: This is the first report of oral HPV among Indian HIV-positive MSM. Our results show a high prevalence of oral HPV infection consistent with studies from Western populations. However, oncogenic anogenital HPV types were relatively uncommon in our study population. It is unknown what the impact of this distribution of oral HPV will be on oropharyngeal cancers. HIV-positive MSM in India should be monitored closely for oral and oropharyngeal pre-cancer and cancer.


Assuntos
Infecções por HIV/complicações , Doenças da Boca/epidemiologia , Infecções por Papillomavirus/epidemiologia , Minorias Sexuais e de Gênero , Estudos Transversais , Soropositividade para HIV/epidemiologia , Homossexualidade Masculina , Humanos , Índia/epidemiologia , Masculino , Pessoa de Meia-Idade , Doenças da Boca/etiologia , Infecções por Papillomavirus/complicações , Prevalência , Fatores de Risco
8.
J Neurosci Rural Pract ; 11(3): 448-453, 2020 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-32753811

RESUMO

Context Stroke tops the list of causes for acquired disability among adults and is the second leading cause of death worldwide. Evidence from developed countries indicate significant decline in stroke incidence and mortality, attributable to prevention of risk factors in general population. There is limited evidence on risk factors for stroke in rural India. Aims This study aims to ascertain the risk factors for stroke in rural Telangana and provide a guide to health care providers in adopting treatment and prevention strategies. Settings and Design The study was conducted in the Moinabad mandal of Ranga Reddy District, Telangana state of India. This is a population based unmatched case-control study. Methods and Materials All the houses of Moinabad were approached by a door-to-door survey to identify cases. A total of 288 persons were enrolled in the study which included 144 cases and 144 controls. Statistical Analysis To derive age and gender adjusted odds ratios of various risk factors, binary logistic regression analysis was performed. Results The estimated crude prevalence of stroke in Moinabad mandal is 257 per lakh population. Modifiable risk factors identified were, total cholesterol, systolic blood pressure, alcohol consumption, smoking, diastolic blood pressure, low high-density lipoprotein cholesterol, and central obesity as measured by waist circumference. Nonmodifiable risk factors identified were male gender and higher age group. Conclusion The high prevalence of stroke in rural Telangana makes it an important public health challenge for the state. The identified risk factors need to be addressed at population level.

9.
Lung India ; 36(6): 519-524, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31670300

RESUMO

BACKGROUND: Tuberculosis (TB) is one of the leading causes of mortality in India. The Revised National Tuberculosis Control Program (RNTCP) is a robust public health system to deal with TB in India. Unless the treated patient comes back to the system with signs and symptoms of TB due to relapse or re-infection, there is no mechanism of follow-up or any method to know the relapse rate in the population. We attempted to follow the patients declared as "Cured" as per the RNTCP guidelines for 1-2 years to identify the health status of the index cases and their household contacts in posttreatment phase. MATERIALS AND METHODS: In this prospective cohort study, 187 index cases, who were declared "Cured" in six randomly selected TB units of Hyderabad district, were followed up for 1-2 years through home visits by trained staff with structured data collection forms. Data were analyzed using SPSS v20.0. RESULTS: The mean age of the index cases was 33.64 (±16.10) years, and there were 75 females and 112 males. The study sample was homogenous for gender, age, smear grade, religion, marital status, smoking status, alcohol consumption, and human immunodeficiency virus status, etc., At 1-year posttreatment follow-up of 187 index cases, 143 (76.47%) were healthy and working without any symptoms of TB. Symptoms of TB were present in 26 (13.90%) cases, and seven index cases (4.06%) were re-diagnosed with TB. The 2-year posttreatment survival was 92%. CONCLUSION: Long-term follow-up of cured, new smear-positive TB cases reinforce the effectiveness of anti-TB treatment under the RNTCP as assessed by improved health outcomes in more than two-thirds of cases and posttreatment survival of 92% of index cases. We recommend continuing such follow-up for all TB cases treated under the RNTCP for effective end-TB strategy.

10.
J Glob Infect Dis ; 10(3): 140-146, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30166813

RESUMO

BACKGROUND AND OBJECTIVES: Discovered in 1983, Extended spectrum beta-lactamase (ESBL) producers are still the leading cause of infections in India. Its prompt detection is crucial to the clinical management. The Clinical Laboratory Standards Institute (CLSI) recommends phenotypic screening and confirmatory tests to identify the ESBL producer making it cost and time consuming for the diagnostic laboratory. We compare here the screening and confirmatory tests offering a solution to the CLSI recommendation. METHODS: Nosocomial isolates E. coli (71) and K. pneumoniae (25) resistant to cefotaxime and ceftazidime were included. CLSI recommended testing with cefotaxime, ceftazidime and in combination with clavulanic acid by disk diffusion and agar dilution methods were performed. E-test was performed on discrepant results. To determine the genetic relatedness of the organisms, 22 Medical and Surgical ICU isolates were genotyped by PFGE. Dendrogram was constructed using dice co-efficient, UPGMA method with diversity database software. RESULTS AND CONCLUSIONS: Phenotypic screening disk diffusion test versus the confirmatory agar dilution MIC tests with cefotaxime and ceftazidime correlated well with the final ESBL status (kappa 0.852 and 0.905 P < 0.001) and (kappa 0.911 and 0.822 P < 0.001). The tests show 99-100% sensitivity, 75-83.3% specificity, and positive likelihood ratios between 4.0 -5.9. E-test confirmed 6 of 12 discordant results as ESBLs. Of the 96 nosocomial isolates screened as possible ESBL producers by the Kirby-Bauer disk diffusion test, 86.5% were confirmed ESBL producers. Genotyping on the ICU isolates by PFGE revealed a genetically diverse population suggesting no transmission of phenotypically similar ESBL strains within the ICUs.

12.
BMC Infect Dis ; 17(1): 665, 2017 10 04.
Artigo em Inglês | MEDLINE | ID: mdl-28978319

RESUMO

BACKGROUND: The objectives of this study were to determine the proportion of malaria, bacteraemia, scrub typhus, leptospirosis, chikungunya and dengue among hospitalized patients with acute undifferentiated fever in India, and to describe the performance of standard diagnostic methods. METHODS: During April 2011-November 2012, 1564 patients aged ≥5 years with febrile illness for 2-14 days were consecutively included in an observational study at seven community hospitals in six states in India. Malaria microscopy, blood culture, Dengue rapid NS1 antigen and IgM Combo test, Leptospira IgM ELISA, Scrub typhus IgM ELISA and Chikungunya IgM ELISA were routinely performed at the hospitals. Second line testing, Dengue IgM capture ELISA (MAC-ELISA), Scrub typhus immunofluorescence (IFA), Leptospira Microscopic Agglutination Test (MAT), malaria PCR and malaria immunochromatographic rapid diagnostic test (RDT) Parahit Total™ were performed at the coordinating centre. Convalescence samples were not available. Case definitions were as follows: Leptospirosis: Positive ELISA and positive MAT. Scrub typhus: Positive ELISA and positive IFA. Dengue: Positive RDT and/or positive MAC-ELISA. Chikungunya: Positive ELISA. Bacteraemia: Growth in blood culture excluding those defined as contaminants. Malaria: Positive genus-specific PCR. RESULTS: Malaria was diagnosed in 17% (268/1564) and among these 54% had P. falciparum. Dengue was diagnosed in 16% (244/1564). Bacteraemia was found in 8% (124/1564), and among these Salmonella typhi or S. paratyphi constituted 35%. Scrub typhus was diagnosed in 10%, leptospirosis in 7% and chikungunya in 6%. Fulfilling more than one case definition was common, most frequent in chikungunya where 26% (25/98) also had positive dengue test. CONCLUSIONS: Malaria and dengue were the most common causes of fever in this study. A high overlap between case definitions probably reflects high prevalence of prior infections, cross reactivity and subclinical infections, rather than high prevalence of coinfections. Low accuracy of routine diagnostic tests should be taken into consideration when approaching the patient with acute undifferentiated fever in India.


Assuntos
Febre/etiologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Bacteriemia/epidemiologia , Bacteriemia/etiologia , Febre de Chikungunya/diagnóstico , Febre de Chikungunya/epidemiologia , Criança , Pré-Escolar , Coinfecção/epidemiologia , Dengue/diagnóstico , Dengue/epidemiologia , Testes Diagnósticos de Rotina , Feminino , Febre/diagnóstico , Febre/epidemiologia , Humanos , Índia/epidemiologia , Leptospira/patogenicidade , Leptospirose/diagnóstico , Leptospirose/epidemiologia , Malária/diagnóstico , Malária/epidemiologia , Masculino , Pessoa de Meia-Idade , Tifo por Ácaros/diagnóstico , Tifo por Ácaros/epidemiologia
13.
Indian J Med Microbiol ; 35(2): 165-175, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28681802

RESUMO

Hantaviruses are known to cause haemorrhagic fever with renal syndrome in Eurasia and hantavirus cardiopulmonary syndrome in the Americas. They are globally emerging pathogens as newer serotypes are routinely being reported. This review discusses hantavirus biology, clinical features and pathogenesis of hantavirus disease, its diagnostics, distribution and mammalian hosts. Hantavirus research in India is also summarised.


Assuntos
Doenças Transmissíveis Emergentes/epidemiologia , Doenças Transmissíveis Emergentes/virologia , Infecções por Hantavirus/epidemiologia , Infecções por Hantavirus/virologia , Orthohantavírus/classificação , Orthohantavírus/isolamento & purificação , Sorogrupo , América/epidemiologia , Ásia/epidemiologia , Doenças Transmissíveis Emergentes/diagnóstico , Doenças Transmissíveis Emergentes/patologia , Europa (Continente)/epidemiologia , Orthohantavírus/fisiologia , Humanos
14.
J Infect Dev Ctries ; 11(3): 234-241, 2017 Mar 31.
Artigo em Inglês | MEDLINE | ID: mdl-28368857

RESUMO

INTRODUCTION: Leptospirosis is a major public health problem in India. However, it has been underreported and under-diagnosed due to a lack of awareness of the disease, a functional surveillance system, and appropriate laboratory diagnostic facilities. METHODOLOGY: This multicenter study aimed to understand the Leptospira serovars causing leptospirosis in seven secondary-level hospitals in six states in India. Since early and accurate diagnosis of leptospirosis is one of the challenges faced by clinicians in India due to the poor specificity and sensitivity of commercially available diagnostic systems, an in-house indirect enzyme-linked immunosorbent assay (ELISA) was developed. Genomic DNA from L. interrogans serovar Canicola was used for polymerase chain reaction amplification, cloning, and expression of the lipL32 gene in E. coli to amplify, clone, and express the lipL32 gene. RESULTS: Australis was the common serovar seen at all the study centers. Serovar Icterohaemorrhagiae was seen in samples from Tamil Nadu and Assam. In-house ELISA was standardized using the purified recombinant LipL32 polypeptide and was used to evaluate serum. Subsequently, acute serum samples from leptospirosis patients (n = 60) were screened. Compared to the gold standard, the microscopic agglutination test, sensitivity and specificity of the in-house ELISA was 95% and 90%, respectively. CONCLUSIONS: Understanding Leptospira serovars circulating in leptospirosis-endemic areas will help to formulate better vaccines. LipL32-based ELISA may serve as a valuable tool for early diagnosis of leptospirosis.


Assuntos
Anticorpos Antibacterianos/sangue , Ensaio de Imunoadsorção Enzimática/métodos , Imunoglobulina M/sangue , Leptospira/classificação , Leptospira/isolamento & purificação , Leptospirose/diagnóstico , Sorogrupo , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Animais , Antígenos de Bactérias/genética , Antígenos de Bactérias/imunologia , Proteínas da Membrana Bacteriana Externa/genética , Proteínas da Membrana Bacteriana Externa/imunologia , Criança , Testes Diagnósticos de Rotina/métodos , Feminino , Humanos , Índia/epidemiologia , Leptospirose/epidemiologia , Lipoproteínas/genética , Lipoproteínas/imunologia , Masculino , Pessoa de Meia-Idade , Prevalência , Proteínas Recombinantes/genética , Proteínas Recombinantes/imunologia , Sensibilidade e Especificidade , Adulto Jovem
15.
Trans R Soc Trop Med Hyg ; 111(2): 55-61, 2017 02 01.
Artigo em Inglês | MEDLINE | ID: mdl-28407146

RESUMO

Background: We aimed to compare TB transmission rates between case and community households in Vellore, South India. Methods: 359 household contacts (HHC) and 363 community contacts (CC) were assessed with tuberculin skin test (TST) and QuantiFERON TB Gold In-Tube test (QFT) between August 2010 and September 2011. Concordance test and multivariate risk factor assessment were conducted using logistic regression adjusted for clustering. Results: Latent TB infection (LTBI) positivity was similar between the two groups using both tests, with only moderate concordance observed between QFT and TST. Children of HHC (<15 years) were at a higher risk for LTBI (odds of 2.37 [1.15-4.89] and 3.02 [1.22-7.45] for TST and QFT respectively). Among adults, both age in decades (odds of 1.33 [1.14-1.15] and 1.16 [1.02-1.32] for TST and QFT, respectively) and the interaction of male gender, smoking and alcohol consumption (odds of 4.06 [1.38-11.93] and 2.59 [1.19-5.64] for TST and QFT, respectively), were associated with increased risk of LTBI. Conclusions: This study provides estimates of TB infection rates accounting for both community and household exposure that contribute to understanding of TB transmission in this setting. We suggest that assessment of risk factors for infection need increased examination as prophylactic treatment of LTBI are being considered.


Assuntos
Tuberculose Latente/epidemiologia , Adolescente , Adulto , Distribuição por Idade , Idoso , Criança , Pré-Escolar , Características da Família , Feminino , Humanos , Índia/epidemiologia , Lactente , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Prevalência , Fatores de Risco , Teste Tuberculínico , Adulto Jovem
16.
BMC Infect Dis ; 17(1): 213, 2017 03 15.
Artigo em Inglês | MEDLINE | ID: mdl-28298208

RESUMO

BACKGROUND: Herpes zoster (HZ) is a prevalent viral disease that inflicts substantial morbidity and associated healthcare and socioeconomic burdens. Current treatments are not fully effective, especially among the most vulnerable patients. Although widely recommended, vaccination against HZ is not routine; barriers in Asia-Pacific include long-standing neglect of adult immunisation and sparse local data. To address knowledge gaps, raise awareness, and disseminate best practice, we reviewed recent data and guidelines on HZ from the Asia-Pacific region. METHODS: We searched PubMed, Scopus, and World Health Organization databases for articles about HZ published from 1994 to 2014 by authors from Australia, China, Hong Kong, India, Indonesia, Japan, Korea, Malaysia, New Zealand, the Philippines, Singapore, Taiwan, Thailand, and Vietnam. We selected articles about epidemiology, burden, complications, comorbidities, management, prevention, and recommendations/guidelines. Internet searches retrieved additional HZ immunisation guidelines. RESULTS: From 4007 retrieved articles, we screened-out 1501 duplicates and excluded 1264 extraneous articles, leaving 1242 unique articles. We found guidelines on adult immunisation from Australia, India, Indonesia, Malaysia, New Zealand, the Philippines, South Korea, and Thailand. HZ epidemiology in Asia-Pacific is similar to elsewhere; incidence rises with age and peaks at around 70 years - lifetime risk is approximately one-third. Average incidence of 3-10/1000 person-years is rising at around 5% per year. The principal risk factors are immunosenescence and immunosuppression. HZ almost always causes pain, and post-herpetic neuralgia is its most common complication. Half or more of hospitalised HZ patients have post-herpetic neuralgia, secondary infections, or inflammatory sequelae that are occasionally fatal. These disease burdens severely diminish patients' quality of life and incur heavy healthcare utilisation. CONCLUSIONS: Several countries have abundant data on HZ, but others, especially in South-East Asia, very few. However, Asia-Pacific countries generally lack data on HZ vaccine safety, efficacy and cost-effectiveness. Physicians treating HZ and its complications in Asia-Pacific face familiar challenges but, with a vast aged population, Asia bears a unique and growing burden of disease. Given the strong rationale for prevention, most adult immunisation guidelines include HZ vaccine, yet it remains underused. We urge all stakeholders to give higher priority to adult immunisation in general and HZ in particular.


Assuntos
Vacina contra Herpes Zoster/uso terapêutico , Herpes Zoster/epidemiologia , Neuralgia Pós-Herpética/prevenção & controle , Vacinação/estatística & dados numéricos , Ásia/epidemiologia , Auditoria Clínica , Análise Custo-Benefício , Conhecimentos, Atitudes e Prática em Saúde , Inquéritos Epidemiológicos , Herpes Zoster/prevenção & controle , Vacina contra Herpes Zoster/imunologia , Humanos , Neuralgia Pós-Herpética/epidemiologia , Ilhas do Pacífico/epidemiologia , Guias de Prática Clínica como Assunto
17.
Sex Transm Dis ; 44(3): 173-180, 2017 03.
Artigo em Inglês | MEDLINE | ID: mdl-28178116

RESUMO

BACKGROUND: The incidence of penile cancer in Indian men is high. Little is known about genital human papillomavirus (HPV) infection in Indian HIV-seropositive men who have sex with men (MSM), a population that may be at particularly high risk for genital HPV infection and, potentially, penile cancer. In this study, we assessed the prevalence and risk factors for genital HPV infection in this population. DESIGN AND METHODS: Three hundred HIV-seropositive MSM were recruited from 2 clinical sites in India. They were tested for genital HPV infection using L1 HPV DNA polymerase chain reaction with probes specific for 29 types and a mixture of 10 additional types. Participants received an interviewer-administered questionnaire that included questions on demographics and behaviors. RESULTS: Human papillomavirus data were available from 299 participants. The prevalence of any HPV type in the penis and scrotum was 55% and 54%, respectively. Human papillomavirus type 35 was the most common oncogenic HPV type followed by HPV-16. In multivariate analysis, being the insertive partner with 100+ male partners increased the odds of any penile HPV infection compared with not being insertive with any partners (odds ratio, 2.5; 95% confidence interval, 1.3-5.1). Circumcision was protective against penile HPV infection (odds ratio, 0.39; 95% confidence interval, 0.19-0.76). CONCLUSIONS: The prevalence of penile and scrotal HPV infection was high among Indian HIV-seropositive MSM. The most common oncogenic HPV type in this population, HPV-35, is not included in any currently available HPV vaccines. Insertive anal sex with men and lack of circumcision were the primary risk factors for penile HPV infection in this population.


Assuntos
Soropositividade para HIV/virologia , Papillomaviridae , Infecções por Papillomavirus/epidemiologia , Doenças do Pênis/epidemiologia , Minorias Sexuais e de Gênero/estatística & dados numéricos , Adulto , Soropositividade para HIV/complicações , Humanos , Índia/epidemiologia , Masculino , Análise Multivariada , Razão de Chances , Infecções por Papillomavirus/complicações , Infecções por Papillomavirus/virologia , Doenças do Pênis/virologia , Pênis/virologia , Prevalência , Fatores de Risco , Escroto/virologia , Comportamento Sexual
18.
J Glob Infect Dis ; 8(4): 129-138, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27942192

RESUMO

Respiratory tract infections are prevalent among Hajj pilgrims with pneumonia being a leading cause of hospitalization. Streptococcus pneumoniae is a common pathogen isolated from patients with pneumonia and respiratory tract infections during Hajj. There is a significant burden of pneumococcal disease in India, which can be prevented. Guidelines for preventive measures and adult immunization have been published in India, but the implementation of the guidelines is low. Data from Bangladesh are available about significant mortality due to respiratory infections; however, literature regarding guidelines for adult immunization is limited. There is a need for extensive awareness programs across India and Bangladesh. Hence, there was a general consensus about the necessity for a rapid and urgent implementation of measures to prevent respiratory infections in pilgrims traveling to Hajj. About ten countries have developed recommendations for pneumococcal vaccination in Hajj pilgrims: France, the USA, Kuwait, Qatar, Bahrain, the UAE (Dubai Health Authority), Singapore, Malaysia, Egypt, and Indonesia. At any given point whether it is Hajj or Umrah, more than a million people are present in the holy places of Mecca and Madina. Therefore, the preventive measures taken for Hajj apply for Umrah as well. This document puts forward the consensus recommendations by a group of twenty doctors following a closed-door discussion based on the scientific evidence available for India and Bangladesh regarding the prevention of respiratory tract infections in Hajj pilgrims.

19.
PLoS One ; 11(7): e0158816, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27389396

RESUMO

BACKGROUND: Approximately one million malaria cases were reported in India in 2015, based on microscopy. This study aims to assess the malaria prevalence among hospitalised fever patients in India identified by PCR, and to evaluate the performance of routine diagnostic methods. METHODS: During June 2011-December 2012, patients admitted with acute undifferentiated fever to seven secondary level community hospitals in Assam (Tezpur), Bihar (Raxaul), Chhattisgarh (Mungeli), Maharashtra (Ratnagiri), Andhra Pradesh (Anantapur) and Tamil Nadu (Oddanchatram and Ambur) were included. The malaria prevalence was assessed by polymerase chain reaction (PCR), routine microscopy, and a rapid diagnostic test (RDT) with PCR as a reference method. RESULTS: The malaria prevalence by PCR was 19% (268/1412) ranging from 6% (Oddanchatram, South India) to 35% (Ratnagiri, West India). Among malaria positive patients P. falciparum single infection was detected in 46%, while 38% had P. vivax, 11% mixed infections with P. falciparum and P. vivax, and 5% P. malariae. Compared to PCR, microscopy had sensitivity of 29% and specificity of 98%, while the RDT had sensitivity of 24% and specificity of 99%. CONCLUSIONS: High malaria prevalence was identified by PCR in this cohort. Routine diagnostic methods had low sensitivity compared to PCR. The results suggest that malaria is underdiagnosed in rural India. However, low parasitaemia controlled by immunity may constitute a proportion of PCR positive cases, which calls for awareness of the fact that other pathogens could be responsible for the febrile disease in submicroscopic malaria.


Assuntos
Febre/parasitologia , Malária Falciparum/epidemiologia , Malária Vivax/epidemiologia , Doença Aguda , Adolescente , Adulto , Estudos de Coortes , Estudos Transversais , Testes Diagnósticos de Rotina , Feminino , Geografia , Hospitalização , Humanos , Índia , Malária Falciparum/diagnóstico , Malária Vivax/diagnóstico , Masculino , Programas de Rastreamento , Microscopia , Reação em Cadeia da Polimerase , Prevalência , Sensibilidade e Especificidade , Adulto Jovem
20.
J Acquir Immune Defic Syndr ; 71(4): 437-43, 2016 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-26379067

RESUMO

BACKGROUND: India has a large population of HIV-positive individuals, including men who have sex with men (MSM), and the incidence of human papillomavirus (HPV)-related cancers is high. In developed countries, HIV-positive MSM exhibit the highest prevalence of anal HPV infection and incidence of anal cancer. Little is known about anal HPV infection in HIV-positive Indian MSM. METHODS: We evaluated 300 HIV-positive MSM from 2 cities in India. Men were tested for anal HPV infection using L1-HPV DNA polymerase chain reaction with probes specific for 29 types and a mixture of 10 additional types. CD4 level and plasma HIV viral load were measured. Participants completed an interviewer-administered questionnaire including a sexual history. RESULTS: The prevalence of anal HPV was 95% (95% confidence interval: 91% to 97%). The 3 most common types were HPV 35 (20%), HPV 16 (13%), and HPV 6/11 (13%). History of taking antiretroviral medications decreased risk of anal HPV 16 infection [relative risk (RR): 0.6 (0.4-1.0)]. Having an increased number of vaginal sex partners lowered risk of any anal HPV infection. Ever having receptive sex increased risk of any anal HPV [RR: 1.2 (1.1-1.4)] and anal HPV 16 [RR: 6.5 (1.8-107)]. CONCLUSIONS: Almost all Indian HIV-positive MSM had anal HPV infection. The prevalence of HPV 16 was lower and the prevalence of other oncogenic HPV types was higher than in similar populations in North America and Europe. Vaccine-based prevention strategies for HPV infection in India should consider potential differences in HPV type distribution among HIV-infected MSM when designing interventions.


Assuntos
Doenças do Ânus/complicações , Infecções por HIV/complicações , Homossexualidade Masculina , Papillomaviridae/fisiologia , Infecções por Papillomavirus/complicações , Adolescente , Adulto , Doenças do Ânus/epidemiologia , Doenças do Ânus/virologia , DNA Viral/isolamento & purificação , Humanos , Índia/epidemiologia , Masculino , Infecções por Papillomavirus/epidemiologia , Prevalência , Fatores de Risco , Comportamento Sexual , Adulto Jovem
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA