The Massachusetts Department of Public Health (DPH) today announced 15 new presumptive positive cases of COVID-19, bringing the total number of confirmed or presumptive positive cases in Massachusetts to 28. All 15 cases had a direct connection to the Biogen employee conference in late February. The presumptive positive cases include five from Suffolk County ranging in age from 30s to 60s; five from Middlesex County ranging in age from 40s to 60s; four cases from Norfolk County ranging in age from 40s to 60s; and a female whose age and county of residence are unknown at the time of this release. Among today’s presumptive positive cases were eight men and seven women. With today’s release, 23 of the presumptive positive cases of COVID-19 identified in Massachusetts are associated with the Biogen employee meeting held in late February. All of today’s presumptive positive cases are isolating at home.

Yesterday, DPH announced five new presumptive positive cases, three of which had a direct connection to Biogen’s employee conference, one with recent international travel, and a fifth case for whom there is no current known linkage to the Biogen conference or foreign travel.

The risk of COVID-19 to the general public in Massachusetts remains low at this time.

The State Public Health Lab’s result is considered “presumptive positive” and the specimens will now be sent to the US Centers for Disease Control and Prevention (CDC) for confirmation.

The Department of Public Health is providing daily updates on the number of confirmed and presumptive positive cases at mass.gov/info-details/covid-19-cases-quarantine-and-monitoring. Case-specific information will be updated on the site Monday, March 9.

As of Wednesday, March 4, 719 people have been subject to self-quarantine in Massachusetts because of COVID-19. Of those, 470 people have completed monitoring and are no longer quarantined, while 249 are currently quarantined. This information is updated online each Wednesday.

For more information on COVID-19 visit mass.gov/2019coronavirus.