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Five discoveries about COVID-19 made since the public health emergency ended

We asked leading researchers to share new discoveries about SARS-CoV-2 and COVID-19, from how the virus spreads and the risk of long COVID to the impact of vaccines and masks.
  1. Ben Johnson

    1. London, U.K.

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Image credit: DrAfter123; Getty images

The coronavirus SARS-CoV-2 infected 1.4 million people worldwide in a 28-day period between July and August of 2023, causing 2,300 reported deaths. This was despite the declaration by the World Health Organization on 5 May 2023 that COVID-19 was no longer a public health emergency of international concern. The true number of cases and deaths is likely to be much higher, given that many countries have dismantled their testing infrastructure.

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Nature Medicine 29, 2974-2976 (2023)

doi: https://doi.org/10.1038/d41591-023-00084-w

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