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Analysis and Health

Covid-19 variant JN.1 may be the mildest form of the virus yet

JN.1, the covid-19 variant that is dominant in much of the world, is more infectious than its predecessors, but appears to be causing less severe illness

By Clare Wilson

15 January 2024

The JN.1 version of the omicron covid-19 variant was first detected in Luxembourg in August and spread to numerous countries over the following months

JUN LI/Getty Images

Some of the recent news stories about covid-19 have felt reminiscent of the first two years of the pandemic. Due to a variant called JN.1 – sometimes called Juno – infection rates have been rising in many countries, with some initial claims that it could cause more serious illness.

But in fact, the latest figures show that in England’s current wave, people who get infected are substantially less likely to get sick enough to need…

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