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Archived articles

Crystal watson

Disposable surgical mask

Q+A

The present and future of masking

Published Aug 16, 2021

Periodic mask-wearing is here to stay, but basic risk assessment skills can help us weigh the pros and cons of ever-changing conditions

Illustration of outbreak in the U.S.

Q+A

Massive U.S. contact tracing effort 'of critical importance'

Published April 24, 2020

Hopkins expert Crystal Watson discusses the significance and challenges of the COVID-19 containment strategy