Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Reinfection by the SARS-CoV-2 Gamma variant in blood donors in Manaus, Brazil
Effectiveness of COVID-19 vaccines against Omicron and Delta hospitalisation: test negative case-control study
Evaluation of Outdoor swimming courses as an intervention to refresh and revitalise NHS workers
Quantifying spatial heterogeneity of malaria in the endemic Papua region of Indonesia: analysis of epidemiological surveillance data
Economic burden and catastrophic health expenditure associated with COVID-19 hospitalisations in Kerala, South India
Remdesivir for the Treatment of COVID-19: An Updated Systematic Review and Meta-Analysis
More than 50 Long-term effects of COVID-19: a systematic review and meta-analysis
Vaccine hesitancy and anti-vaccination attitudes during the start of COVID-19 vaccination program: a content analysis on Twitter data
Remote monitoring of progression in early Parkinson's disease: reliability and validity of the Roche PD Mobile Application v2
Threshold analyses on combinations of testing, population size, and vaccine coverage for COVID-19 control in a university setting
SPECIFICATIONS OF THE ACMG/AMP VARIANT CURATION GUIDELINES FOR MYOCILIN: RECOMMENDATIONS FROM THE CLINGEN GLAUCOMA EXPERT PANEL
Disease-specific contribution of pulvinar dysfunction to impaired emotion recognition in schizophrenia
Antibody responses to AZD1222 vaccination in West Africa
Neighborhood distribution of availability of newer tobacco products: A four-site study, 2021
Large-scale validation of the Prediction model Risk Of Bias ASsessment Tool (PROBAST) using a short form: high risk of bias models show poorer discrimination
Low-Dose Naltrexone/Acetaminophen Combinations and Each Component in the Acute Treatment of Migraine: Findings of a Small, Randomized, Double-Blind, and Placebo-Controlled Clinical Trial
Distinct genome-wide DNA methylation and gene expression signatures in classical monocytes from African American patients with systemic sclerosis
Assessing COVID prevention strategies to permit the safe opening of college campuses in fall 2021
The impact of community asymptomatic rapid antigen testing on COVID-19 hospital admissions: a synthetic control study
Psychological distress and work and social adjustment in the COVID-19 pandemic: a cross-Country analysis
Development and validation of a quantitative instrument for measuring temporal and social disorientation in the Covid-19 crisis
Oral Pre-exposure prophylaxis (PrEP) to prevent HIV: a systematic review and meta-analysis of clinical effectiveness, safety, adherence and risk compensation in all populations
R1441G but not G201S mutation enhances LRRK2 mediated Rab10 phosphorylation in human peripheral blood neutrophils
Reconstructing transmission chains of SARS-CoV-2 amid multiple outbreaks in a geriatric acute-care hospital
Early and rapid identification of COVID-19 patients with neutralizing type I-interferon auto-antibodies by an easily implementable algorithm
Prediction of confirmed and death cases of Covid-19 in Chile through time series techniques: A comparative study