Validation of dried blood spot for serological diagnosis of Hepatitis B and C: a multicentric study.

The present study aimed to determine diagnostic performance of dried blood spot (DBS) for the detection of Hepatitis B surface antigen (HBsAg) and Hepatitis C virus antibodies (anti-HCV) using CLIA at 3 different laboratories across India. DBS can serve as a simple and convenient alternative to plasma/serum for HBsAg detection. However for anti-HCV, site-specific validation of the assay is warranted.

Genomic characterization and epidemiology of an emerging SARS-CoV-2 variant in Delhi, India.

Delhi, the national capital of India, experienced multiple severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) outbreaks in 2020 and reached population seropositivity of >50% by 2021. During April 2021, the city became overwhelmed by COVID-19 cases and fatalities, as a new variant, B.1.617.2 (Delta), replaced B.1.1.7 (Alpha). A Bayesian model explains the growth advantage of Delta through a combination of increased transmissibility and reduced sensitivity to immune responses generated against earlier variants (median estimates: 1.5-fold greater transmissibility and 20% reduction in sensitivity). Seropositivity of an employee and family cohort increased from 42% to 87.5% between March and July 2021, with 27% reinfections, as judged by increased antibody concentration after a previous decline. The likely high transmissibility and partial evasion of immunity by the Delta variant contributed to an overwhelming surge in Delhi.

A rapid and sensitive method to detect SARS-CoV-2 virus using targeted-mass spectrometry.

In the last few months, there has been a global catastrophic outbreak of severe acute respiratory syndrome disease caused by the novel coronavirus SARS-CoV-2 affecting millions of people worldwide. Early diagnosis and isolation are key to contain the rapid spread of the virus. Towards this goal, we report a simple, sensitive and rapid method to detect the virus using a targeted mass spectrometric approach, which can directly detect the presence of virus from naso-oropharyngeal swabs. Using a multiple reaction monitoring we can detect the presence of two peptides specific to SARS-CoV-2 in a 2.3 min gradient run with 100% specificity and 90.5% sensitivity when compared to RT-PCR. Importantly, we further show that these peptides could be detected even in the patients who have recovered from the symptoms and have tested negative for the virus by RT-PCR highlighting the sensitivity of the technique. This method has the translational potential of in terms of the rapid diagnostics of symptomatic and asymptomatic COVID-19 and can augment current methods available for diagnosis of SARS-CoV-2.

Integrated genomic view of SARS-CoV-2 in India.

Background: India first detected SARS-CoV-2, causal agent of COVID-19 in late January 2020, imported from Wuhan, China. From March 2020 onwards, the importation of cases from countries in the rest of the world followed by seeding of local transmission triggered further outbreaks in India. Methods: We used ARTIC protocol-based tiling amplicon sequencing of SARS-CoV-2 (n=104) from different states of India using a combination of MinION and MinIT sequencing from Oxford Nanopore Technology to understand how introduction and local transmission occurred. Results: The analyses revealed multiple introductions of SARS-CoV-2 genomes, including the A2a cluster from Europe and the USA, A3 cluster from Middle East and A4 cluster (haplotype redefined) from Southeast Asia (Indonesia, Thailand and Malaysia) and Central Asia (Kyrgyzstan). The local transmission and persistence of genomes A4, A2a and A3 was also observed in the studied locations. The most prevalent genomes with patterns of variance (confined in a cluster) remain unclassified, and are here proposed as A4-clade based on its divergence within the A cluster. Conclusions: The viral haplotypes may link their persistence to geo-climatic conditions and host response. Multipronged strategies including molecular surveillance based on real-time viral genomic data is of paramount importance for a timely management of the pandemic.

Need for revisiting the role of sexually transmitted disease clinics in government hospitals in India.

INTRODUCTION: The Government of India provides treatment for sexually transmitted infections (STIs) through government's sexually transmitted disease (STD) clinics with the mandate of providing curative and preventive services for clients in the context of STIs. However, besides the patients suffering from STDs, other clients with problems related to reproductive and sexual health also attend these clinics. This study aimed to assess the profile and treatment-seeking behavior of clients attending STD clinics in government hospitals in India. MATERIALS AND METHODS: This multicentric, cross-sectional study with 5098 participants was conducted over 2 months in identified 19 Indian states. Chi-square test was used for statistical analysis. RESULTS: The percentage with STDs (62.98%) was nearly double than those with non-STDs (37.1%). Around 8.2% of patients had an STD and were also HIV positive. Compared to the total STD cases, only 9% of the partners had turned up for screening. Of significance were the non-STD cases who presented with both physical and psychological symptoms including infertility. Among males, it was mainly sexual dysfunction and balanoposthitis, and in females, lower abdominal pain and bacterial vaginosis. Only 27.3% reported that they had come directly to the government facility/clinic. Nearly 38% of males and 30% of females had tried home remedies before coming to the government clinic. Majority (77.9%) of the clients reported that they had never been counseled on any aspect of STD or HIV. CONCLUSION: The profile of clients in the various clinics across the country indicates that the name "STD Clinic" is a misnomer since the presenting complaints of clients are varied, and related not only to STDs but also to other reproductive tract problems. Furthermore, the average new patient load observed in our study is low and this was attributed to the name "STDs" given to these clinics. Renaming them as "Reproductive Health Clinics" would attract more patients and lead to better utilization.