Four recent positive cases of COVID-19 have been confirmed in the Portland School System, according to superintendent Xavier Botana.

These cases could send as many as 50 people at Portland High School into quarantine.

Botana, in a letter to the school community Friday, said there was one case each at Rowe Elementary School, King Middle School, Lyman Moore Middle School, and Portland High School.

“We do expect the other two cases, at Moore and (PHS), to lead to significantly more contacts being quarantine — perhaps as many as 50 at Portland High School.” Botana said.

During their infectious period, the two students who tested positive at Rowe and King Elementary were not at school, which means there is no risk of exposure.

School officials and the Maine CDC have contacted close contacts.

Due to privacy laws regarding health status, Botana was not able to disclose specifics surrounding the individuals that tested positive.

Botana said Portland is following local and state protocols to ensure health and safety for the school communities.