‘Milder variant’: the reasons for Omicron hope

Insiders say government experts believe the Covid-19 variant causes less severe illness than Delta

People queue for a booster vaccine outside St Thomas' Hospital, London
People queue for a booster vaccine outside St Thomas’ Hospital, London
(Image credit: Rob Pinney/Getty Images)

People infected with the Omicron strain of Covid-19 are less likely to become severely ill than those who contract Delta, UK government scientists are expected to announce.

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