BA4

Will new COVID variants BA.4 and BA.5 cause the Bay Area’s surge to get even worse?

Will new COVID variants BA.4 and BA.5 cause the Bay Area’s surge to get even worse?

Two new highly infectious and immune-evasive coronavirus variants are now dominant in the United States, according to estimates released this week by the Centers for Disease Control and Prevention, and together they likely will drive the Bay Area’s long spring surge well into summer, health experts say. It’s not yet clear exactly what impact BA.4 …

Will new COVID variants BA.4 and BA.5 cause the Bay Area’s surge to get even worse? Read More »

The Omicron subvariants BA.4 and BA.5 have together become dominant in the U.S., the C.D.C. estimates.

The Omicron subvariants BA.4 and BA.5 have together become dominant in the U.S., the C.D.C. estimates.

BEIJING — June, for Shanghai, was supposed to be a time of triumph. After two months of strict lockdown, the authorities had declared the city’s recent coronavirus outbreak under control. Businesses and restaurants were finally reopening. State media trumpeted a return to normalcy, and on the first night of release, people milled in the streets, …

The Omicron subvariants BA.4 and BA.5 have together become dominant in the U.S., the C.D.C. estimates. Read More »

Neutralization Escape by SARS-CoV-2 Omicron Subvariants BA.2.12.1, BA.4, and BA.5 | NEJM

Neutralization Escape by SARS-CoV-2 Omicron Subvariants BA.2.12.1, BA.4, and BA.5 | NEJM

To the Editor: Figure 1. Figure 1. Omicron Subvariant Mutations and Neutralizing Antibody Responses. Panel A shows the lineage of mutations that have been identified in the omicron BA.1, BA.2, BA.2.12.1, and BA.4 or BA.5 subvariants of SARS-CoV-2, as compared with the reference WA1/2020 isolate. BA.4 and BA.5 have identical sequences of the spike protein …

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