Instruct: Identify the main category of the given medRxiv paper based on its title.
Query: Spatially regulated designs of incidence surveys can match the precision of classical survey designs whilst requiring smaller sample sizes: the case of snakebite in Sri Lanka
Reevaluation of Seroprevalence using a Semi-quantitative Anti-spike IgG in Health Care workers at an Academic Medical Center in Boston, Massachusetts
Comparison of dried blood spots and venous blood for the detection of SARS-CoV-2 antibodies in a population of nursing home residents
Detection of SARS-CoV-2 infection by saliva and nasopharyngeal sampling in frontline healthcare workers: an observational cohort study.
Risk Factors for Delirium in Elderly Patients After Lumbar Spinal Fusion
Disentangling the association of hydroxychloroquine treatment with mortality in Covid-19 hospitalized patients through Hierarchical Clustering
Hospitalization of mild cases of community-acquired pneumonia decreased more than severe ones during the COVID-19 epidemic
Pulsed electromagnetic fields can prevent bone loss and improve balance function in older adults with primary osteoporosis: a systematic review and meta-analysis
Higher polygenic scores for empathy increase posttraumatic stress severity in response to certain traumatic events
Comparing a new device to measure lung volumes with three traditional methods in individuals with different lung conditions
SARS-CoV-2 antibody binding and neutralization in dried blood spot eluates and paired plasma
Efficacy and Safety of Viable Selective Germline Genome  Edited Pigs Skin Xenotransplants in Patients with Thermal Burns
All-cause mortality during SARS-CoV-2 Pandemic in India: Nationally-representative estimates independent of official death registry
Does Coaching in the 3rd Year of Medical School Affect Stress, Anxiety and Depression?
The efficacy and safety of bamlanivimab treatment against COVID-19: A meta-analysis
SHP2 promotes NETosis through ERK5 pathway and mediates the development of psoriasis
Monoclonal antibodies against SARS-CoV-2: potential game-changer still underused
The production of anti-PF4 antibodies in anti-phospholipid antibody-positive patients is not affected by COVID-19 vaccination
Coronary collaterals not visible by invasive angiography can provide more than half of normal resting perfusion in patients with coronary artery disease
May we overcome the current serious limitations for distributing reconstituted mRNA vaccines?
Magnesium Treatment on Methylation Changes of Transmembrane Serine Protease 2 (TMPRSS2)
Introducing the 4Ps Model of Transitioning to Distance Learning: a convergent mixed methods study conducted during the COVID-19 pandemic.
Colchicine in patients admitted to hospital with COVID-19 (RECOVERY): a randomised, controlled, open-label, platform trial
Plasma glial fibrillary acidic protein is an early marker of amyloid pathology in Alzheimer's disease
OASIS+: leveraging machine learning to improve the prognostic accuracy of OASIS severity score for predicting in-hospital mortality
SARS-CoV-2 transmission from the healthcare setting into the home: a prospective longitudinal cohort study