TORONTO (CBC) - All H1N1 vaccination clinics in Peel Region will be closed Sunday through Wednesday because they don't have enough of the serum.

"Peel residents in the priority groups are encouraged to contact their family doctor who may be able to vaccinate them," said Peel Region in a Friday afternoon release.

Pregnant women and those with children between the ages of 6 months and one year can call their doctor to schedule an appointment.

The change affects the following four clinics, which were originally scheduled to be open Sunday through Wednesday:

Those clinics will re-open on Thursday.