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More than half the U.S. population lives in counties where Covid-19 cases and hospitalizations are high enough that people should wear masks in indoor public settings, according to Centers for Disease Control and Prevention data.

The CDC’s latest assessment represents a significant jump from the week before, reflecting the added pressure that the easily spread Omicron BA.5 subvariant is putting on the U.S. since it became the dominant COVID-19 strain. Over a third of U.S. counties now fall into the CDC’s “high” category, up from one in five counties a week earlier.

China has been tweaking its stringent COVID curbs but shows no sign of backing off from its "dynamic zero" policy, and has lagged in vaccination efforts that would enable it to do so, casting a heavy shadow over the world's second-largest economy.

The absence of a roadmap out of zero-COVID and expectations that it will persist well into 2023 leaves residents and businesses facing a prolonged period of uncertainty.

Recent scattered COVID flare-ups, the imposition of lockdowns in some cities and the arrival of the highly-contagious BA.5 variant have added to those worries.

Pamela McCarroll doesn’t have the luxury of ignoring phone calls from unknown numbers.

The 30-year old is undergoing treatment for long-term colon cancer in Fairfax County, Va., and never knows whether it could be a doctor, a hospital with test results, or someone trying to schedule an appointment.

CNN interviewed Dr. Anne Rimoin, UCLA Fielding School of Public Health professor of epidemiology and the Gordon-Levin Endowed Chair in Infectious Diseases and Public Health, about the need for a testing and vaccine campaign focused on monkeypox.

The growing dominance of two new ultra-contagious Omicron subvariants is prolonging a wave of coronavirus cases in California and sparking growing concerns from health officials that coming weeks could see significant spread and increased hospitalizations.

BA.4 and BA.5 are now believed to be responsible for most new infections nationwide. The strains are of particular concern because they are not only especially contagious but also capable of reinfecting those who have survived earlier Omicron infection.

Dr. Nathan D. Wong was elected president of the Inter-American Heart Foundation in December 2020.

Dr. Beate Ritz was reappointed to the California Air Resources Board’s Scientific Review Panel.

Dr. Anne Rimoin received the Global Achievement Award from the Johns Hopkins Alumni Association.

Dr. Robert Kim-Farley was appointed as a member of the UCLA Bedari Kindness Institute for 2021 to 2024.

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