Instruct: Identify the main category of the given medRxiv paper based on the title.
Query: Vaccine Effectiveness against Referral to Hospital and Severe Lung Injury Associated with COVID-19: A Population-Based Case-Control Study in St. Petersburg, Russia
Variants of SARS-COV-2 and the Death Toll
Evaluation of the Family Liaison Officer (FLO) role during the COVID-19 Pandemic
Risk factors of chronic liver disease among adult patients in tertiary hospitals, Northern Ethiopia: An unmatched case-control study
Mendelian randomization analysis identifies blood tyrosine levels as a biomarker of non-alcoholic fatty liver disease
Meditation practice, mindfulness and pain-related outcomes in mindfulness-based treatment for episodic migraine
Atypical influence of biomechanical knowledge in Complex Regional Pain Syndrome-Towards a different perspective on body representation
Deep learning-based prognosis prediction among preeclamptic pregnancies using electronic health record data
Reduction in COPD exacerbations during COVID-19: a systematic review and meta-analysis
Fatigue in perinatal stroke is associated with the functional connectivity
Development and validation of the Symptom Burden Questionnaire™ for Long COVID: a Rasch analysis
Gamma Frequency Sensory Stimulation in Probable Mild Alzheimer's Dementia Patients: Results of a Preliminary Clinical Trial
Evaluation of rapid antibody test and chest computed tomography results of COVID-19 patients: A retrospective study
Estimating SARS-CoV-2 reproduction number by infection location in Japan
Modelling the laminar connectome of the human brain
Childhood immunisation coverage in Kenya by socioeconomic, geographic, maternal, child, and place of birth characteristics: equity impact analysis
ELF5 is a respiratory epithelial cell-specific risk gene for severe COVID-19
No woman should be left behind: A decomposition analysis of socioeconomic inequalities in unsafe abortion among women presenting for abortion care services in Lusaka and Copperbelt provinces of Zambia
Underlying factors that influence the acceptance of COVID-19 vaccine in a country with a high vaccination rate
Circular RNA detection identifies circPSEN1 alterations in brain specific to Autosomal Dominant Alzheimer Disease
Myocarditis After mRNA-1273 Vaccination: A Population-Based Analysis of 151 Million Vaccine Recipients Worldwide
Willingness to take the Covid-19 vaccines and associated factors at a tertiary institution community in Johannesburg, South Africa
Effectiveness and durability of the mRNA vaccine-induced SARS-CoV-2-specific humoral and cellular immunity in severe asthma patients on biological therapy
Post-viral parenchymal lung disease following COVID-19 and viral pneumonitis hospitalisation: A systematic review and meta-analysis
Associations of genetic scores for birth weight with newborn size and later Anthropometric traits and cardiometabolic risk markers in South Asians
Identification and application of plasmatic microRNA expression quantitative trait loci (miR-QTL) at first trimester of pregnancy