KNTV NBC Nightly News With Lester Holt November 28, 2021 01:36:00
Another, but potentially also invade the immune system >> and many mutations in omicron are similar to the highly contagious mutations in delta do we know if it is more transmissible than the delta variant? >> if you look at the data out of south africa, it does appear it is more transmissible than delta. i think again, it is sort of a small sample size. >> that sample size is only around 100 confirmed cases of omicron in south africa but officials describe an exponential rise in overall covid c...
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