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As omicron spreads in China, one of its largest cities — Shanghai — has been placed on lockdown under the government's "zero COVID" policy.

For COVID patients, ECMO is a last-ditch respiratory treatment in which only about half survive. Yet a new small study suggests many lives would still have been saved if there had been more machines.

People who are 50 and older and certain immunocompromised individuals may get a second Pfizer-BioNTech or Moderna COVID-19 vaccine booster four months after they received the first.

Early COVID-19 indicators show that the virus’ transmission is growing.

People with schizophrenia are three times as likely to die from the virus, giving scientists an opportunity to study the potential relationship between the immune system and mental illness.

In "A Knee on the Neck," composer Adolphus Hailstork and librettist Herbert Martin pay tribute to Floyd's memory and offer hope for the future – while wrestling with the realities of the present day.

Weddings postponed due to COVID-19 are back on, creating a blockbuster year of celebrations. It brings both joy and new challenges to couples as well as caterers, DJs, photographers and more.

Farmers in one North County community face a choice: stop getting the untreated water they use to irrigate their avocados, grapes and other crops or pay thousands of dollars in fees to switch water service.

Though findings are preliminary, many studies suggest that vaccinated people have good protection against the condition, although just how much is still up for debate.

That's how the so-called "deltacron" variant — a mashup of delta and omicron — came to be. This process of recombining tells us a lot about the possible past and future of SARS-CoV-2.