Clinical Infectious Diseases

Diseases, Conditions, Syndromes

More evidence suggests COVID-19 was in US by Christmas 2019

A new analysis of blood samples from 24,000 Americans taken early last year is the latest and largest study to suggest that the new coronavirus popped up in the U.S. in December 2019—weeks before cases were first recognized ...

Diseases, Conditions, Syndromes

Aerosol transmission may spread COVID-19

The World Health Organization needs to recognize that coronavirus might be spread by tiny respiratory droplets that remain in the air for prolonged periods, say leading academics.

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