Board has been advised of three cases of COVID-19, affecting two of its elementary schools.
Board officials say, in one case, an individual tested positive at St. Charles Catholic Elementary School in Thorold.
That case has affected two classrooms at the school.
In the other, two individuals have tested positive at Loretto Catholic Elementary in Niagara Falls.
The board says two classes at Loretto will also switch to virtual learning for the next two weeks.
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