The COVID-19 pandemic in Boston is part of an ongoing viral pandemic of coronavirus disease 2019 (COVID-19) in the Massachusetts city of Boston. The first confirmed case was reported on February 1, 2020, and the number of cases began to increase rapidly by March 8. Massachusetts Governor Charlie Baker declared a state of emergency on March 10. Mayor Marty Walsh declared a public health emergency on March 15. By March 21, more than a hundred people in Boston had tested positive for COVID-19. Most early cases were traceable to a company meeting held in late February by the biotechnology firm Biogen in Boston.