Instruct: Identify the main category of the given Medrxiv paper based on the title.
Query: Spike vs nucleocapsid SARS-CoV-2 antigen detection: application in nasopharyngeal swab specimens
Antigenic and virological properties of an H3N2 variant that will likely dominate the 2021-2022 Northern Hemisphere influenza season
GCH1 mutations in hereditary spastic paraplegia
Determinants of maternal morbidity during pregnancy in urban Bangladesh: Negative binomial regression approach
Impact of Discoordinated Care on Healthcare Utilization and Survival in Stage IV Non-Small Cell Lung Cancer Patients
Development of ADAF screening tool for emotional and coping problems in cancer patients
Integrating endometrial proteomic and single cell transcriptomic pipelines reveals distinct menstrual cycle and endometriosis-associated molecular profiles
Considerations for using multiple imputation in propensity score-weighted analysis
Immune cells in bronchoalveolar lavage fluid of Ugandan adults who resist versus those who develop latent Mycobacterium tuberculosis infection
A real-world evaluation of the implementation of NLP technology in abstract screening of a systematic review
Creation of a ustekinumab external control arm for Crohn's disease using electronic health records data: a pilot study
Internal Neurolysis for the Treatment of Trigeminal Neuralgia: Systematic Review
Do recent family physician graduates practice differently? A longitudinal study of primary care visits and continuity in four Canadian provinces
Predicting Emerging Themes in Rapidly Expanding COVID-19 Literature with Dynamic Word Embedding Networks and Machine Learning
Enhancing Research Data Infrastructure to Address the Opioid Epidemic: The Opioid Overdose Network (02-Net)
Social predictors of food insecurity during the stay-at-home order due to the COVID-19 pandemic in Peru. Results from a cross-sectional web-based survey
Simulating the impacts of interregional mobility restriction on the spatial spread of COVID-19 in Japan
Factors associated with COVID-19 vaccine hesitancy in Senegal: a mixed study
Spatial covariance analysis of FDG-PET and HMPAO-SPECT for the differential diagnosis of dementia with Lewy bodies and Alzheimer's disease.
General Practitioner perspectives and wellbeing during the COVID-19 Pandemic: a mixed method social media analysis
Online prescribing for sexually transmitted infections 	- what is on offer? An evaluation of internet pharmacies based in the United Kingdom
An integrated rural health system baseline assessment of COVID-19 preparedness in Siaya Kenya
The relationship between relative aerobic load, energy cost, and speed of walking in individuals post-stroke
Tocilizumab, netakimab, and baricitinib in patients with mild-to-moderate COVID-19: a retrospective cohort study
Factors affecting aerosol size distribution during various dental procedures
COLI-NET: Fully Automated COVID-19 Lung and Infection Pneumonia Lesion Detection and Segmentation from Chest CT Images