Quebec's mass vaccination clinics are set to close at the end of the week, though health authorities are making the shot available throughout December on a regional basis.

Only about 46 per cent of Montrealers have received the H1N1 vaccine, though health officials hope it'll be up to half the population by week's end.

Healthy adults make up the largest unvaccinated group, and some at Place Alexis Nihon said they are finally giving in.

"My mother sort of pushed me to do it, so I decided to go and do it - finally. I gave in," said one person receiving their vaccine.

"I'm off this week and do some Christmas shopping at the same time," said another.

Experts suggest the undecided examine the numbers closely. Out of about 18 million doses administered in Canada, there were 162 adverse reactions, and 4 people died. It's unclear if the deaths were related to the vaccine.

"On the other side, if we assume that out of the 30 million people in Canada, the other half got the disease, we had over 8000 hospitalizations, we had about 600 people end up in intensive care units on ventilators and we had about 300 deaths. So if what you're worried about is getting really sick or being in a hospital or dying, though the risk of both are low, it's a lot lower if you've had the vaccine," said Dr. Timothy Brewer, a director with McGill University's medical school.

Health authorities are making the H1N1 shot available on Dec. 21, 22 ,23, 29 and 30, and then again in January on a region-by-region basis.

For information on your region, click here.

Seasonal flu shots will be available at doctors' offices, clinics and in the workplace as of Jan. 11, and in many cases, H1N1 shots will be available at that time.