Articles on Contagiousness
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Authorities are racing to contain a suspected outbreak of a rare respiratory disease. A microbiologist explains what it is and how it spreads.
None of our authors can see the future, but many do have expertise that offers insights about what’s reasonable to expect.
Careful lab work will complement public health data as researchers worldwide focus on omicron, asking questions about contagiousness, severity of disease and whether vaccines hold up against it.


