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Among his new steps to fight COVID surges this winter: requiring private health insurers to reimburse people for at-home tests. It also calls for more people to get vaccines and boosters.

State health officials say they're increasing COVID-19 testing at California’s airports for arrivals from countries identified as areas where the newly identified variant is spreading.

Scientists at UC San Diego are looking for omicron and other COVID-19 variants in a unique way.

Attendees share their experiences at the scaled back pop culture convention.

NPR's Ari Shapiro chats with Madhu Pai, a global health expert at McGill University, about the state of vaccine deliveries to Africa and the global south.

How did this new strain of the coronavirus evolve? Researchers are investigating various possibilities. One leading theory involves ... just one person.

The individual returned from South Africa on Nov. 22 and had mild symptoms. Cases have been found in more than 20 countries, less than a week after the worrying new variant was first identified.

A person in California has become the first in the U.S. to have an identified case of the omicron variant of COVID-19. The news comes as scientists continue to study the risks posed by the new strain of the virus.

More should be known about the transmissibility and severity of the new variant in "days, not necessarily weeks," a senior World Health Organization scientist says.

The coronavirus outbreak exposed flaws in the global health system but also showed a willingness among countries to work together, Tedros Adhanom Ghebreyesus, the WHO's director-general, says.