The combination of Delta and Omicron variants is driving a dangerous tsunami of Covid-19 cases, the World Health Organization (WHO) chief has said.
Read MoreIsrael's top health adviser says the surge of Omicron cases could see the country reach Covid herd immunity.
Read MoreThe United Arab Emirates has announced that it will ban citizens who have not had three doses of a vaccine against Covid-19 from travelling abroad.
Read MoreUS health officials have halved the recommended isolation time for people with asymptomatic Covid-19 from 10 to five days, amid a surge in cases.
Read MoreFormer prime minister Gordon Brown says the failure to distribute vaccines to poorer countries is a "stain on our global soul".
Read MorePeople catching Omicron are 50% to 70% less likely to need hospital care compared with previous variants, a major analysis says.
Read MoreIf you have a sore throat, runny nose and a headache there is a good chance it will be Covid, warn UK researchers.
Read MoreIsrael says it plans to become the first country to roll out a fourth dose of the Covid-19 vaccine as the country prepares for a wave of infections driven by the new Omicron variant.
Read MoreThe heavily mutated Omicron variant has led to a serious dent in the ability of vaccines to protect us from catching the Covid virus.
Read MoreAt least one person in the UK has died with the Omicron coronavirus variant, the prime minister has said.
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