Maisonneuve-Rosemont hospital is asking people under the age of 18 not to visit in an effort to limit the possibility of H1N1 infections.
Officials say the virus is prevalent in children and teenagers.
"It's a rapidly evolving situation across Quebec and in particular across the island of Montreal," said a hospital spokesperson. "We feel that that is a reservoir that could bring the virus into the hospital in large quantities, so we'd like to keep that as limited as possible."
More than 1300 Quebecers have been confirmed to have contracted the H1N1 virus. There have been seven deaths due to the illness in Quebec, but most who passed away had underlying health conditions.
Experts say the reason children and teenagers have contracted the majority of the cases is because they are more social, and tend to congregate more.
Infectious diseaes specialist Dr. Timothy Brewer says some experts also suspect some people over the age of 60 have been exposed to variations of the H1N1 virus, which may have increased their immunity.
