COVID’s Annual Summer Wave Is Back. Here’s What’s Behind ItCOVID’s Annual Summer Wave Is Back. Here’s What’s Behind ItCOVID’s Annual Summer Wave Is Back. Here’s What’s Behind It 

Gemini / GoogleJust as many Americans squeeze in the last weeks of summer, COVID-19 is staging a return, according to health experts. The virus has settled into a pattern of rising cases each summer and winter, and this year’s warm-weather wave of illness, known as the “summer surge,” is already underway. “COVID-19 is rising nationally but from a low baseline. As of the latest, CDC estimated infections were…