Local health experts answer your questions about vaccination rates, COVID-19 variants and the potential booster shots needed down the road. Panelists include Alexander Tsynman, MD, associate medical director of outpatient behavioral health services, Mercy Hospital; and Bruce Hirsch MD, FACP, FIDSA, AAHIVM, attending physician in infectious diseases, Northwell Health. Sign up for COVID-19 text alerts at newsday.com/text.