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![Someone being vaccinated against covid-19 in LA, California, in April 2021](https://images.newscientist.com/wp-content/uploads/2023/08/21143332/SEI_167720111.jpg?width=1200)
Somebody being vaccinated in opposition to covid-19 in Los Angeles, California, in April 2021
Mario Tama/Getty Photos
On account of the virus behind the covid-19 pandemic, and associated vaccination campaigns, many individuals could have some immunity to different coronaviruses, together with two that might trigger harmful outbreaks sooner or later.
This contains the virus behind SARS, which began spreading in China in 2002 and killed round 1 in 10 of these contaminated earlier than it was stopped by an infection management measures, in addition to the deadlier virus behind MERS, which kills 1 in 3 contaminated folks. …
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