BlogHide Resteemsoliviamahesa (25)in health • 3 years agoFive undervaccinated clusters put the entire United States at riskA new data analysis identifies clusters of unvaccinated people, most of them in the southern United States, that are vulnerable to surges in Covid-19 cases and could become breeding grounds for even…oliviamahesa (25)in newshealth • 3 years agoFive undervaccinated clusters put the entire United States at riskA new data analysis identifies clusters of unvaccinated people, most of them in the southern United States, that are vulnerable to surges in Covid-19 cases and could become breeding grounds for even…