Early research suggests Omicron may cause milder illnesses than previous variants
Rochelle Walensky
President Joe Biden to announce new measures to tackle spread of the virus
Data shows no need for variant-specific vaccines, says Biden’s chief medical adviser
US health official cautiously optimistic on Covid variant and says booster shots will be key
Reports say US officials looking at requiring all travellers to self-quarantine for seven days
Variant more transmissible than viruses that cause Mers, Sars, Ebola, colds, seasonal flu and smallpox
Republicans furious as CDU recommends masks in certain settings due to Delta surge
Health officials in United States reiterate calls for Americans to avail of vaccination
About 97% of people entering US hospitals with Covid-19 are unvaccinated
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