Once again, Covid-19 seems to everywhere. If you feel caught off-guard, you aren’t alone.
After the Omicron tidal wave of that washed over the United States in January and the smaller rise in cases in the spring caused by the BA.2 subvariant, it might have seemed like the coronavirus could be ignored for a while. After all, the US Centers for Disease Control and Prevention estimated in December that nearly all Americans had been vaccinated or have antibodies from a past infection. Surely all that immunity bought some breathing room.
But suddenly, many people who had recovered from Covid-19 as recently as March or April found themselves exhausted, coughing and staring at two red lines on a rapid test. How could this be happening again — and so soon?
The culprit this time is yet another Omicron offshoot, BA.5. It has three key mutations in its spike protein that make it both better at infecting our cells and more adept at slipping past our immune defenses.
Read more at CNN.com