The number of coronavirus cases in Massachusetts increased to 138 on Saturday, up from 123 the day prior.

There are 19 confirmed cases and 119 presumptive positive cases, according to the state Department of Public Health.

Of those cases, 104 are linked to the Biogen conference last month, five are travel related, eight are in western Massachusetts cluster and 21 are under investigation.

Barnstable and Bristol counties were reported to have one case each on Saturday, having not been on the list Friday.

Middlesex County added another five cases, bringing its total to 65. Norfolk County added four cases, rising to 28 total. Essex County added three cases, for a total of five. And Suffolk County added one case, bringing its total to 27.

Eleven patients have been hospitalized overall, up one from Friday, while 105 patients were not been hospitalized.

Gov. Charlie Baker announced Saturday morning he was starting a “coronavirus command center” to be headed by state Health and Human Services Secretary Marylou Sudders.