[vemba-video id=”health/2020/11/16/covid-19-reinfection-explainer-orig-jk.cnn”] After a surge of new infections over the summer, California’s Covid-19 numbers began showing signs of progress and counties slowly transitioned toward less restrictive tiers in the state’s reopening plan. Then things took a turn for the worst. Just as the state surpassed a million infections last week, the governor warned the seven-day average…… MORE