Instruct: Identify the main category of the given medRxiv paper based on its title.
Query: Protocol for rapid implementation of a SARS-CoV-2 sero-survey during the 2020 COVID-19 pandemic: who, where, how?
Impact of the early stages of the COVID-19 pandemic on coverage of RMNH interventions in Ethiopia
Association of lung clearance index with survival in individuals with cystic fibrosis
Emergence of porcine delta-coronavirus pathogenic infections among children in Haiti through independent zoonoses and convergent evolution
Physical activity promotion is lacking in local treatment protocols for patients hospitalized with myocardial infarction: A cross-sectional study
Status Quo and Influencing Factors of Family Doctors Performance in Dongguan City
Early effectiveness of COVID-19 vaccination with BNT162b2 mRNA vaccine and ChAdOx1 adenovirus vector vaccine on symptomatic disease, hospitalisations and mortality in older adults in England
Specificity of cortical area and thickness as biomarkers for comorbid internalizing and externalizing mental disorders in pre-adolescence
Association between willingness to receive the COVID-19 vaccine and sources of health information among Japanese workers: a cohort study
The impact of demographic factors on numbers of COVID-19 cases and deaths in Europe and the regions of Ukraine
Anthropometric measurements as predictors of hypertension in Busia, Vihiga, Trans Nzoia and Siaya counties of Western Kenya
Blood-Based Brain Injury Biomarkers to Prognosticate Outcome after Pediatric Cardiac Arrest
The statistical analysis of daily data associated with different parameters of the New Coronavirus COVID-19 pandemic in Georgia and their short-term interval prediction from September 2020 to February 2021
A magnetic bead immunoassay to detect human IgG reactive to SARS-CoV-2 Spike S1 RBD produced in Escherichia coli
No Evidence that Ongoing HIV-Specific Immune Responses Contribute to Persistent Inflammation and Immune Activation in Persons on Long-Term ART
Tenofovir Disoproxil Fumarate and severity of COVID-19 in people with HIV infection
Characterizing the disproportionate burden of SARS-CoV-2 variants of concern among essential workers in the Greater Toronto Area, Canada
IL-13 is a driver of COVID-19 severity
Antibody response to SARS-CoV-2 vaccination is extremely vivacious in subjects with previous SARS-CoV-2 infection
Reduction in postoperative opioid requirement associated with use of the NSS-2(R) Bridge device, a disposable auriculo-nerve field stimulator, and factors affecting the response in cancer patients undergoing abdominal surgical procedures
Spatio-temporal modelling of the first Chikungunya epidemic in an intra-urban setting: the role of socioeconomic status, environment and temperature
Association between the physical work environment and work functioning impairment while working from home under the COVID-19 pandemic in Japanese workers
Differential Cytokine Signatures of SARS-CoV-2 and Influenza Infection Highlight Key Differences in Pathobiology
Vaccine Effectiveness against Referral to Hospital and Severe Lung Injury Associated with COVID-19: A Population-based Case-control Study in St. Petersburg, Russia
Survey of Direct and Indirect Effects of COVID-19 on Eyes and the Common Ocular Manifestations
Effectiveness of Localized Lockdowns in the SARS-CoV-2 Pandemic