One death, 221 new Covid-19 cases in NH Sunday By DHHS - | May 3, 2021 This 2020 electron microscope image made available by the Centers for Disease Control and Prevention shows SARS-CoV-2 virus particles which cause COVID-19. According to research released in 2021, evidence is mounting that having COVID-19 may not protect against getting infected again with some of the new variants. People also can get second infections with earlier versions of the coronavirus if they mounted a weak defense the first time. (Hannah A. Bullock, Azaibi Tamin/CDC via AP) CONCORD – The state Department of Heal...