Instruct: Identify the main category of the given Medrxiv paper based on the title.
Query: Sensitive detection of SARS-CoV-2 seroconversion by flow cytometry reveals the presence of nucleoprotein-reactive antibodies in unexposed individuals
Effectiveness of Covid-19 vaccines against SARS-CoV-2 Omicron variant (B.1.1.529): A systematic review with meta-analysis and meta-regression
Comprehensive mapping of neutralizing antibodies against SARS-CoV-2 variants induced by natural infection or vaccination
Severe hospital events following symptomatic infection with Sars-CoV-2 Omicron and Delta variants in France, December 2021 - January 2022: a retrospective, population-based, matched cohort study
Stable temporal relationships as a first step towards causal inference: an application to antibiotic resistance
Prevalence of SARS-CoV-2 antibodies in Denmark: Nationwide, population-based seroepidemiological surveys
Optimal dose and safety of molnupiravir in patients with early SARS-CoV-2: a phase 1, dose-escalating, randomised controlled study
Comparisons of the risk of myopericarditis between COVID-19 patients and individuals receiving COVID-19 vaccines: a population-based study
Estimation of the basic reproduction number of COVID-19 from the incubation period distribution
Knowledge towards breast cancer, and breast self-examination practices and its barriers among university female students in Bangladesh: Findings from a cross-sectional study
COVID-19 vaccination and Guillain-Barre syndrome: analyses using the National Immunoglobulin Database
Effects of worldwide interventions and vaccination on COVID-19 between waves and countries
No difference in cognitive task-related oscillations between human internal globus pallidus and subthalamic nucleus
Quantification and progress over time of specific antibodies against SARS-CoV-2 in breast milk of lactating women vaccinated with BNT162b2 Pfizer-BioNTech COVID-19 vaccine (LacCOVID)
Detecting microstructural deviations in individuals with deep diffusion MRI tractometry
High mortality of COVID-19 associated mucormycosis in France: a nationwide retrospective study
Virological and serological kinetics of SARS-CoV-2 Delta variant vaccine-breakthrough infections: a multi-center cohort study
An Oral SARS-CoV-2 Mpro Inhibitor Clinical Candidate for the Treatment of COVID-19
NEURONAL AND ASTROCYTIC TETRAPLOIDY IS INCREASED IN DRUG-RESISTANT EPILEPSY
Smoking Interaction with a Polygenic Risk Score for Reduced Lung Function
Vaccine effectiveness of two and three doses of BNT162b2 and CoronaVac against COVID-19 in Hong Kong
The evaluation of a web-based tool for measuring the uncorrected visual acuity and refractive error in keratoconus eyes: a prospective open-label method comparison study
A longitudinal seroconversion panel shows anti-SARS-CoV-2 antibody levels up to 6.5 months after vaccination with mRNA-1273 (Moderna)
Assessing the effect of back exoskeletons on injury risk during material handling
Does the use of prediction equations to correct self-reported height and weight improve obesity prevalance estimates? A pooled cross-sectional analysis of Health Survey for England data
Longitudinal immune profiling of a SARS-CoV-2 reinfection in a solid organ transplant recipient