Anti-retroviral therapy adherence in India (2012-18): A systematic review and meta-analysis.

Background: India has 2.1 million people living with HIV/AIDS (PLHIV). The objective of this study was to ascertain the extent of anti-retroviral therapy (ART) adherence and reasons for nonadherence among PLHIV in India. Methods: We conducted a systematic review and meta-analysis using the following criteria: (1) Observational or experimental studies conducted in India and (2) English language studies. Published during January 2012-June 2018 with data collection during the same period (3). 95% ART adherence rate (primary outcome). We reviewed bibliographic databases (PubMed, Scopus) and extracted relevant data. The forest plot was used to display the meta-analysis results. Analyses were performed in Stata 14 using the "Metaprop_one" function. Results: A total of 511 records were identified after removing duplicates, 59 full-texts were screened of which 15 studies were included in the meta-analysis. Only one study was conducted in rural India, with <95% adherence reported by all its participants. The PLHIV reported several reasons for their ART nonadherence including forgetfulness (8/15), running out of pills (3/15), distance from the health center and associated travel (2/15), alcohol abuse (3/15), concealment of HIV status from family (2/15, felt stigma (2/15), depressive symptoms (2/15), and fear of side-effects (2/15). The overall pooled estimate of ART adherence was 54.1% (95% confidence interval [CI] 27%-81%), while among facility-based studies, the ≥95% adherence rate was significant higher. 62% (95% CI 46%-0.78%). Conclusions: Despite the universal provision of free of cost ART to all PLHIV in government health facilities in India, suboptimal adherence to treatment persists in nearly half of these patients.

Restoration of dendritic cell homeostasis and Type I/Type III interferon levels in convalescent COVID-19 individuals.

BACKGROUND: Plasmacytoid and myeloid dendritic cells play a vital role in the protection against viral infections. In COVID-19, there is an impairment of dendritic cell (DC) function and interferon secretion which has been correlated with disease severity. RESULTS: In this study, we described the frequency of DC subsets and the plasma levels of Type I (IFNα, IFNß) and Type III Interferons (IFNλ1), IFNλ2) and IFNλ3) in seven groups of COVID-19 individuals, classified based on days since RT-PCR confirmation of SARS-CoV2 infection. Our data shows that the frequencies of pDC and mDC increase from Days 15-30 to Days 61-90 and plateau thereafter. Similarly, the levels of IFNα, IFNß, IFNλ1, IFNλ2 and IFNλ3 increase from Days 15-30 to Days 61-90 and plateau thereafter. COVID-19 patients with severe disease exhibit diminished frequencies of pDC and mDC and decreased levels of IFNα, IFNß, IFNλ1, IFNλ2 and IFNλ3. Finally, the percentages of DC subsets positively correlated with the levels of Type I and Type III IFNs. CONCLUSION: Thus, our study provides evidence of restoration of homeostatic levels in DC subset frequencies and circulating levels of Type I and Type III IFNs in convalescent COVID-19 individuals.

Population-Based Serosurvey for Severe Acute Respiratory Syndrome Coronavirus 2 Transmission, Chennai, India.

We conducted a cross-sectional survey to estimate the seroprevalence of IgG against severe acute respiratory syndrome coronavirus 2 in Chennai, India. Among 12,405 serum samples tested, weighted seroprevalence was 18.4% (95% CI 14.8%-22.6%). These findings indicate most of the population of Chennai is still susceptible to this virus.

Dengue infection in India: A systematic review and meta-analysis.

INTRODUCTION: Dengue is the most extensively spread mosquito-borne disease; endemic in more than 100 countries. Information about dengue disease burden, its prevalence, incidence and geographic distribution is critical in planning appropriate control measures against dengue fever. We conducted a systematic review and meta-analysis of dengue fever in India. METHODS: We searched for studies published until 2017 reporting the incidence, the prevalence or case fatality of dengue in India. Our primary outcomes were (a) prevalence of laboratory confirmed dengue infection among clinically suspected patients, (b) seroprevalence in the general population and (c) case fatality ratio among laboratory confirmed dengue patients. We used binomial-normal mixed effects regression model to estimate the pooled proportion of dengue infections. Forest plots were used to display pooled estimates. The metafor package of R software was used to conduct meta-analysis. RESULTS: Of the 2285 identified articles on dengue, we included 233 in the analysis wherein 180 reported prevalence of laboratory confirmed dengue infection, seven reported seroprevalence as evidenced by IgG or neutralizing antibodies against dengue and 77 reported case fatality. The overall estimate of the prevalence of laboratory confirmed dengue infection among clinically suspected patients was 38.3% (95% CI: 34.8%-41.8%). The pooled estimate of dengue seroprevalence in the general population and CFR among laboratory confirmed patients was 56.9% (95% CI: 37.5-74.4) and 2.6% (95% CI: 2-3.4) respectively. There was significant heterogeneity in reported outcomes (p-values<0.001). CONCLUSIONS: Identified gaps in the understanding of dengue epidemiology in India emphasize the need to initiate community-based cohort studies representing different geographic regions to generate reliable estimates of age-specific incidence of dengue and studies to generate dengue seroprevalence data in the country.