cp24.com

Students arrive at Archbishop Romero Catholic Secondary School on Thursday, May 7, 2009.

A number of Toronto-area schools will remain open on Friday after three more people tested positive for the H1N1 flu virus.

The Toronto District School Board (TDSB) is confirming that a student at North Toronto Collegiate Institute in the Yonge Street and Eglinton Avenue E. area is infected with the H1N1 virus, also known as swine flu.

The school is being cleaned, and the show will go on for a spring concert scheduled for this evening.

The female grade 10 student is recovering at home and the board says it cannot reveal whether the student travelled to Mexico due to confidentiality reasons.

"We're going to do some enhanced environmental cleaning so that people can focus on the concert and not on H1N1," says Chris Broadbent, manager of health and safety for the TDSB.

He tells CP24 that cleaners will be giving the school a major scrub down on the weekend, disinfecting keyboards and other points of contact.

The board says students, who are not showing any flu symptoms, can continue to go to school as normal.

CP24 has learned of another case of H1N1 at a school in the GTA. A student or staff member at one of the city's Central Montessori Schools has become infected with the flu virus.

A letter from Dr. Barbara Yaffe of Toronto Public Health was sent home informing parents of the illness.

A female grade 12 student at Archbishop Romero Catholic Secondary School in North York also tested positive for the H1N1 virus on Thursday.

Meanwhile, the board is also confirming a case at St. Anthony Catholic Elementary School downtown near Bloor Street W. and Ossington Avenue.

The Toronto Catholic District School Board (TCDSB) won't specify whether the infected person is a student or staff member.

The school says there is a low risk of infection to others, and that anyone showing symptoms is being told to stay home.

The TCDSB's safety manager Corrado Maltese says there are no other cases under investigation at the Catholic board.