Instruct: Identify the main category of the given Medrxiv paper based on the title.
Query: The burden of nosocomial covid-19: results from the Wales multi-centre retrospective observational study of 2518 hospitalised adults.
Protocol for a mixed methods exploratory study of success factors to escalation of care: the SUFFICE study
COVID-19 gender difference pattern in Iranian population, compared to the global pattern; a systematic review and meta-analysis
Rapid growth in disposable e-cigarette vaping among young adults in Great Britain from 2021 to 2022: a repeat cross-sectional survey
Impact of Covid-19 Pandemic on Racial/Ethnic Differences in Mortality by Cause of Death
Vegetable intake and cardiovascular risk: genetic evidence from Mendelian randomization
Prevalence of anxiety, depression, and stress among teachers during the COVID-19 pandemic: Systematic review
Employment status and its associated factor for patients 12 months after intensive care: Secondary analysis of the SMAP-HoPe-study
Seroconversion rate after primary vaccination with two doses of BNT162b2 versus mRNA-1273 in solid organ transplant recipients: a systematic review and meta-analysis
Longitudinal testing for SARS-CoV-2 RNA in day care centers in Hesse, Germany, during increased local incidence and with VOC Alpha as dominant variant: Results of the SAFE KiDS 2 and SAFE KiDS 3 study
Socio-demographic characteristics and their relation to medical service consumption among elderly in Israel during the COVID-19 lockdown in 2020 compared to the corresponding period in 2019
Modelling COVID -19 Transmission in a Hemodialysis Centre Using Simulation Generated Contacts Matrices
Severe SARS-CoV-2 infection induces a distinct nasal cytokine profile
Evaluation of Measles Surveillance System amidst Covid 19 pandemic in Asutifi North District, Ahafo Region, Ghana.
Turnover of SARS-CoV-2 lineages shaped the pandemic and enabled the emergence of new variants in the state of Rio de Janeiro, Brazil
Behavioral, Demographic, and Clinical determinants of HIV Status in Zambian Women
COVID-19 Test Positivity Rate as a marker for hospital overload
Differentiating COVID-19 and dengue from other febrile illnesses in co-epidemics: Development and internal validation of COVIDENGUE scores
Neutralizing antibodies against SARS-CoV-2 variants of concern elicited by the Comirnaty COVID-19 vaccine in nursing home residents
Seroresponse to SARS-CoV-2 vaccines among maintenance dialysis patients
Dense Optic Nerve Head Deformation Estimated using CNN as a Structural Biomarker of Glaucoma Progression
Polygenic Risk Scores for Prediction of Breast Cancer in Korean women
Establishing a baseline for human cortical folding morphological variables: a multicenter study
Comparison of accelerometry-based measures of physical activity
Accuracy and performance of the WHO 2015 and WHO 2019 HIV testing strategies across epidemic settings
Vaccine-induced antibody level predicts the clinical course of breakthrough infection of COVID-19 caused by delta and omicron variants: a prospective observational cohort study