COVID-19 cases are back on the rise. There are 3 main reasons why

It's happening again: COVID-19 cases are back on the rise. There are 3 main reasons why. COVID-19 infections are up, driven by new variants, waning immunity from vaccines and past infections and fewer people masking, health officials say. YahooNews

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A rising tide of omicron subvariants is in part behind the rise, said Dr. Anthony Fauci, chief medical adviser to President Joe Biden.

There are now at least four omicron subvariants circulating in the United States. BA.2 is dominant, making up 50.9% of cases but BA.2.12.1 is almost equal to it with 47.5%. The newer strains are even more infectious than previous strains, adding to the increase in cases.

He urged people who test positive for COVID-19 to reach out to their health care providers "as soon as possible" to see if a treatment is appropriate for them, as treatments work better if begun quickly.

The administration's continuing push for boosters and vaccination comes as a paper published Wednesday in the journal "Nature" showed a case of omicron in unvaccinated people provides very little immunity against other variants of the virus that causes COVID-19.

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