Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: Evaluation of County-Level Heterogeneity in Excess Mortality in Colorado from March to September 2020
A Qualitative Study Regarding Messages of the COVID-19 Vaccine from Vaccinated Healthcare Providers and Healthy Adults
How an election can be safely planned and conducted during a pandemic: Decision support based on a discrete event model
Impact of a sanitation intervention on quality of life and mental wellbeing in low-income urban neighbourhoods of Maputo, Mozambique
Early introduction and rise of the Omicron SARS-CoV-2 variant in highly vaccinated university populations
On the forecastability of food insecurity
Emergence and widespread circulation of a recombinant SARS-CoV-2 lineage in North America
Laboratory study to investigate the sensitivity and specificity of a diagnostic dressing to detect burn wound infection
Cellular and humoral Immune response to mRNA COVID-19 vaccination in subjects with chronic lymphocytic leukemia
Development of ADAF screening tool for emotional and coping problems in cancer patients
Direct comparison of venipuncture serum draws versus whole blood finger-stick specimens by anti-COVID-19 IgG/IgM rapid lateral flow immunoassay and ELISA.
The Specchio-COVID19 cohort study: a longitudinal follow-up of SARS-CoV-2 serosurvey participants in the canton of Geneva, Switzerland (Study protocol)
Impact of January 2021 curfew measures on SARS-CoV-2 B.1.1.7 circulation in France
Multifactorial seroprofiling dissects the contribution of pre-existing human coronaviruses responses to SARS-CoV-2 immunity
Expanding the Russian allele frequency reference via cross-laboratory data integration: insights from 6,096 exome samples
Humoral and cellular responses to mRNA vaccines against SARS-CoV2 in patients with a history of CD20-B-cell depleting therapy
Excess Mortality probably due to COVID-19 in Tokyo, Japan in August and September, 2020
Reconstruction of a large-scale outbreak of SARS-CoV-2 infection in Iceland informs vaccination strategies
Social determinants of health exacerbate disparities in COVID-19 illness severity and lasting symptom complaints
Identifying molecular mediators of the relationship between body mass index and endometrial cancer risk: a Mendelian randomization analysis
The gut microbiome and early-life growth in a population with high prevalence of stunting
Paternal body mass index before conception associated with offspring's birth weight in Chinese population: a prospective study
Is Netrin-1 Associated with the Development of Fibrosis in Systemic Sclerosis?
Detection of Human Papillomaviruses DNA in paired peripheral blood and cervix samples patients with cervical lesions and healthy individuals
Underdispersion in the reported Covid-19 case and death numbers may suggest data manipulations
Antibodies against type-I Interferon: detection and association with severe clinical outcome in COVID-19 patients