https://www.mass.gov/info-details/covid-19-travel-order"Persons Who Have Been Completely Vaccinated for COVID-19: Individuals who have received two doses of either the Moderna or Pfizer COVID-19 vaccines OR who have received a single dose of the Janssen vaccine, more than 14 days ago and who do not have symptoms, do not need to obtain a negative test prior to traveling to, or quarantine upon arrival to, Massachusetts. COVID-19 vaccinated individuals arriving in Massachusetts must have documentation of their vaccination(s), including the date(s) of administration, available if asked. This exception does not include vaccinated individuals who have symptoms of COVID-19, who must follow all testing and quarantine guidance outlined in the travel rules."