Avoid Coronavirus Scams. COVID-19 vaccines are free. If anyone charges you for help signing up or the shot itself, it's a scam. You can't buy the COVID-19 vaccine anywhere. It's only available at federal- and state-approved locations. Always talk with your doctor or healthcare professional before you try any product claiming to treat. Harvard Medical School's HMX Online Learning team is offering a selection of immunity-related videos and interactive materials to help with understanding how the body reacts to threats like the coronavirus that causes COVID-19, and the role that vaccines can play in generating an immune response. Resources on Health Disparities and COVID-19. Testing for COVID-19 is widely available throughout New York State. Find a Test Site Near You. Drive-thru Testing Sites Rockland Drive Thru - CTS Mobile Testing - 160 N Rte 303, West Nyack, NY 10994 (near Palisades Mall) Hours of Operation: Sunday - Thursday: 9a.m. - 6p.m.; Friday: 9a.m. - 3p.m..