Vaccines vs. the variants

Vaccines vs. the variants

 

The good news: In 48 states, the averages of new Covid-19 cases have dropped significantly over the past week. And every state improved its rate of vaccinations. But now it's a race between vaccines and variants.   All viruses mutate over time, but some variants of the novel coronavirus are particularly worrisome because they have proven to be more transmissible.   One that was first identified in the UK, known as B.1.1.7, has already been detected in more than 24 US states, and early data shows that it may also be more deadly, at least in some populations.   Another variant, B.1.351 – first identified in South Africa – has scientists worried because its mutations might make our vaccines less effective. Both Pfizer and Moderna are confident that their vaccines will work against these variants, but companies are developing booster shots just in case.   On Monday, health officials in Minnesota said another variant – called P.1 – had been identified in the US for the first time. This case was found in a resident who traveled back from Brazil – the only place the variant had previously been detected.   More of these variants are certain to pop up. "The more you let the virus spread, the more it mutates, the more variants you'll have," explained Dr. Celine Gounder, a member of the Biden Administration’s coronavirus task force. So remember: Get your shot, use your mask, and stay distanced.