Instruct: Identify the main category of the given Medrxiv paper based on its title.
Query: SARS-CoV-2 vaccine Alpha and Delta variant breakthrough infections are rare and mild, but happen relative early after vaccination
Recent Gains in Life Expectancy Reversed by the COVID-19 Pandemic
Intermittent calorie restriction alters T cell subsets and metabolic markers in people with multiple sclerosis
Association of patients' past misdiagnosis experiences with trust in their current physician: the TRUMP2-Net study
Stability of the stroke code during the COVID-19 pandemic in the region of Madrid: a retrospective cohort study
Estimating real-world COVID-19 vaccine effectiveness in Israel
Genomic and epidemiological analysis of SARS-CoV-2 viruses in Sri Lanka
Anticarcinogenic effects from plasma elderly trained: the role of mitochondrial function
SIR Modeling the Dual Disaster Impacts of Omicron B.1.1.529 and Natural Disaster Events on Simulated 6 Months (from December 2021 to May 2022) Healthcare System Resiliences in Fragile SE Asia Ring of Fire Ecosystems
Randomized controlled trial of gut decontamination in pediatric patients undergoing allogeneic hematopoietic stem cell transplantation
Causal Mediation Analysis with Multiple Causally Ordered and Non-ordered Mediators based on Summarized Genetic Data
A model framework for projecting the prevalence and impact of Long-COVID in the UK
Cutaneous surgical wounds have distinct microbiomes from intact skin
The "throwaways". Conflicts of interest in dermatology publications.
Expression of γ-globin genes in β-thalassemia patients treated with sirolimus: results from a pilot clinical trial (Sirthalaclin)
The effect of circulating zinc, selenium, copper and vitamin K1 on COVID-19 outcomes: a Mendelian randomization study
Variation in colorectal cancer treatment and outcomes in Scotland: real world evidence from national linked administrative data
Impact of COVID-19 pandemic on Black, Asian and Minority Ethnic (BAME) communities: a qualitative study on the perspectives of BAME community leaders
Older adults experiences of supervised hardstyle kettlebell training: A qualitative study from the BELL pragmatic controlled trial
Impairments in goal-directed action and reversal learning in a proportion of individuals with psychosis: evidence for differential phenotypes in early and persistent psychosis
Herd immunity induced by COVID-19 vaccination programs to suppress epidemics caused by SARS-CoV-2 wild type and variants in China
A polygenic risk score predicts mosaic loss of chromosome Y in circulating blood cells
High rates of diabetes and pre-diabetes in postpartum period in Indian GDM women
Post-traumatic Stress Risk among COVID-19 Survivors in Colombia
Evaluation of the Nallasamy Formula: A Stacking Ensemble Machine Learning Method for Refraction Prediction in Cataract Surgery
Quality of life and health-related utility after head&neck cancer surgery