Microsoft says it's immediately putting $20 million from its AI for Health program toward tools that can help researchers and officials get a handle on the coronavirus pandemic.

Objective To quantify the association between physical activity and risk of SARS-CoV-2 infection, COVID-19-associated hospitalisation, severe illness and death due to COVID-19 in adults. Design A ...

We examined the association between hydroxychloroquine use and respiratory failure at a large medical center providing care to a substantial number of patients with Covid-19 in New York City.