The agency said the variants may be about 20% more transmissible and also that some COVID-19 treatments may be less effective against them, CNN reported.
However, the CDC didn’t say that vaccines would be completely ineffective against the two strains.
Currently, no coronavirus variants have been classified as a “variant of high consequence,” the highest threat level. That category would include variants shown to significantly reduce vaccine effectiveness, CNN said.
Still, health officials are concerned that some antibody treatments may not work as well against the variants, which are officially called B.1.427 and B.1.429. Scientists have been monitoring the strains closely in California over the past few months.The U.S. Department of Health and Human Services (HHS) recently halted shipments of one COVID-19 antibody treatment to California, Nevada and Arizona, where the variants are circulating widely, CNN reported.
Officials said that a COVID-19 therapy made by Eli Lilly, a combination of the drugs bamlanivimab and etesevimab, can still be ordered, and a different antibody treatment made by Regeneron Pharmaceuticals was also not affected by the HHS action.
Both of those therapies combine two different lab-made antibodies. That’s thought to make them more resilient to emerging strains of the coronavirus, CNN reported. If a mutation allows the virus to evade one antibody, it may still be susceptible to the other.
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