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Articles on Transmission of viruses

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Vaccinated people are well protected from getting sick, but could they inadvertently transmit the coronavirus? Noam Galai/Getty Images Entertainment via Getty Images

Can people vaccinated against COVID-19 still spread the coronavirus?

The COVID-19 vaccines are a smash success. But that doesn’t mean they keep every vaccinated person completely free of the coronavirus.
A man wearing a surgical mask makes a child wear one outside a hospital where a student who had been in Wuhan is kept in isolation in Thrissur, Kerala state, India. AP Photo

WHO declares global health emergency over coronavirus: 4 questions answered

The World Health Organization declared the new coronavirus to be a public health emergency on Jan. 30, 2020. Does the action really change anything? An expert answers four questions.

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