COVID is like Michael Myers in Halloween: just when you think it’s finally out of the picture, it comes back to threaten you again. Coronavirus cases in the U.S. have been plummeting for weeks, and hospitalizations are near an all-time low. But with another Omicron variant pushing up case numbers around the world, it seems depressingly plausible that at least one more wave — the sixth, if you’re counting — could be headed America’s way.
Omicron BA.2 is similar to the variant that caused this winter’s spike, BA.1. But it has 20 different mutations, four of them on a crucial region of the spike protein. These disparities are likely part of the reason BA.2 appears to be considerably more transmissible than the original Omicron — 33 percent, according to one Danish study. BA.2 is also thought to infect vaccinated people more easily than its forebear, though, fortunately, it does not appear to be any deadlier. First detected in the Philippines in November, the variant spread widely in South Africa and India in December and has since become the dominant strain around the world.
It’s hitting parts of Asia particularly hard. China, which imposed strict, widespread lockdowns during the early days of the pandemic and has maintained a “Zero COVID” strategy since, mostly avoided the waves that hit the U.S. and Europe. Then BA.2 showed up. In the last few weeks, the number of cases in China has surged from 300 a day to more than 3000. In response, the Chinese authorities have re-imposed lockdown measures affecting more than 50 million people. Continue reading New York: Is the U.S. Facing Another COVID Wave?









