Instruct: Identify the main category of Medrxiv papers based on the titles.
Query: A prospective observational safety study on ChAdOx1 nCoV- 19 corona virus vaccine (recombinant) use in healthcare workers- first results from India
Mapping a Pandemic: SARS-CoV-2 Seropositivity in the United States
No difference in cognitive task-related oscillations between human internal globus pallidus and subthalamic nucleus
Categorizing ultra-processed food intake in large-scale cohort studies: evidence from the Nurses' Health Studies, the Health Professionals Follow-Up Study, and the Growing Up Today Study
mRNA Vaccine Effectiveness against COVID-19 among Symptomatic Outpatients Aged >=16 Years in the United States, February to May 2021
Second Primary Malignancies in Chronic Lymphocytic Leukaemia; Skin, Solid Organ, Haematological, and Richter's Syndrome
Performance of polygenic risk scores for cancer prediction in a racially diverse academic biobank
The impact of the UK's first COVID-19 lockdown on rates of violence and aggression on psychiatric inpatient wards
How dangerous is omicron and how effective are vaccinations?
Impact of COVID-19 Pandemic on Utilization of Facility-Based Essential Maternal and Child Health Services in North Shewa Zone, Ethiopia
Dynamics of SARS-CoV-2 with Waning Immunity in the UK Population
Social relationships and activities following elimination of SARS-CoV-2: a qualitative cross-sectional study
Longitudinal changes and key determinants of meeting WHO recommended levels of physical activity during the COVID-19 pandemic in a UK-based sample: Findings from the HEBECO Study.
The development and usability testing of digital knowledge translation tools for parents of children with bronchiolitis
A Transcriptomic Severity Metric that Predicts Clinical Outcomes in Critically Ill Surgical Sepsis Patients
Factors associated with maternal tetanus vaccination in Myanmar: An analysis of Demographic and Health Survey data
COVID-19 vaccine effectiveness among healthcare workers in Portugal: results from a hospital-based cohort study, December 2020 to November 2021
Patterns of antibiotic cross-resistance by bacterial sample source: a retrospective cohort study
Multi-Omics Signatures of Alcohol Use Disorder in the Dorsal and Ventral Striatum
Consumption of multiple sources of protein is associated with gestational diabetes mellitus in the Chinese population
Spanish Version of the Attitude Towards COVID-19 Vaccines Scale: Reliability and Validity Assessment
Durability of SARS-CoV-2 Antibodies from Natural Infection in Children and Adolescents
Awareness regarding Anemia in Antenatal women attending tertiary care hospitals in South India
Vaccine Effectiveness against Referral to Hospital and Severe Lung Injury Associated with COVID-19: A Case-Control Study in St. Petersburg, Russia
mRNA COVID-19 vaccine booster fosters B and T cell responses in immunocompromised patients
Descriptive characteristics of continuous oximetry measurement in moderate to severe COVID-19 patients