COVID Variant - Omicron B.1.1.529
it is still too early to know whether the new variant, dubbed omicron, is more transmissible than the delta variant. There remains little understanding about the severity of illness caused by the variant and the rate of hospitalization. Scientists in South Africa, where the variant was first identified, said they expect more breakthrough cases in people vaccinated against the coronavirus.

How Omicron Variant Rattled the World in One Week

11/28/21
from The Wall Street Journal,
11/28/21:

Speedy discovery, announcement and global response shows new phase in fight against Covid-19, as health officials hunt for variants that could evade vaccines.

Covid-19 vaccine makers have begun lab tests to see whether existing shots work against the strain; some have begun preparing new vaccines

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