KING OF PRUSSIA, Pa. (CBS) — A Children’s Hospital of Philadelphia cardiologist at the King of Prussia Specialty Care site is currently hospitalized after testing positive for coronavirus. Montgomery County officials say the man contracted the virus while traveling abroad to where COVID-19 is active. A source says he was in Egypt where he may have gotten infected. Now, several schools are closing this week after students and staff might have been exposed while at the facility.

The Upper Merion resident is currently in critical condition at the Hospital of the University of Pennsylvania.

CHOP says they’re concerned for the health of others who might have been exposed to COVID-19. Services at the Cardiology and Allergy Clinics at King of Prussia have been suspended and redirected to the main campus.

What You Need To Know: Latest Coronavirus Information From Pennsylvania, New Jersey And Delaware Health Departments

All staff who may have come in contact with the doctor over the last week have been directed to self-quarantine at home for 14 days. Patients and their families who also came into contact with him are being contacted and being advised to self-quarantine.

“While we are keeping the physician in our thoughts and hope for his full recovery, we have immediately shifted focus to the well-being of our patients, families and staff who may have been directly or indirectly exposed at this KOP site,” CHOP said to an email to staff.

Several schools in Pennsylvania — mainly in Montgomery County — have been impacted as students, staff and parents may have been exposed to the coronavirus at the King of Prussia facility. The schools that are closed Tuesday include:

All Lower Merion School District schools

All Norristown Area School District schools

Simmons Elementary School in the Hatboro-Horsham School District

Neshaminy High School in Bucks County

Henderson High School in the West Chester Area School District

There are now 10 presumed positive coronavirus cases in the state of Pennsylvania. Seven of those cases are in Montgomery County and one each in Delaware, Monroe and Wayne Counties.

CBS3’s Matt Petrillo contributed to this report.