Reply(1) There are 114 COVID-19 vaccination sites for Massachusetts first responders. (Shutterstock) CHELMSFORD, MA — The Chelmsford Senior Center will be among three sites where Chelmsford police officers, firefighters, EMTs and other first responders will be able to get COVID-19 vaccinations, state officials announced Tuesday morning. First responders working in Billerica, Chelmsford, Dracut, Tyngsboro, Tewksbury, Westford will be able to get vaccinated at the center on Groton Road in North Chelmsford. Chelmsford first responders will also be able to get vaccinated at Haverhill Trinity EMS and Lowell Trinity EMS. Subscribe Dates and times for the clinics are still being determined. Subscribe Thank