The Northwestern Health Unit is following Ontario's lead in how it delivers seasonal flu shots this fall.
While flu shot clinics will be available to those over 65 next month, everyone else will have to wait the December.
Medical Officer of Health Doctor Jim Arthurs says the H1N1 flu shot will be offered first.
"There maybe an increased risk if people get the seasonal flu vaccine prior to getting the H1N1," says Arthurs," especially for people who are under the age of 65. So the plan is to change the phase-in into a three-phase immunization effort."
The H1N1 flu shot will be administered in the region in November.