They say that's because continuing high demand has used up the province's supply of 280,000 doses and additional supplies are limited.
Dr. Denise Werker, deputy chief medical health officer, says more vaccine is expected to arrive in the coming days, but officials feel it's necessary to offer shots to those at highest risk from H1N1.
H1N1 is the dominant flu strain circulating in Saskatchewan and across Canada and has the greatest impact on those who were born after the strain first surfaced in 2009.
About 25 per cent of Saskatchewan residents have received influenza vaccinations since last fall.
The province also says there's been another flu-related death, bringing the total number of deaths to seven, while 32 people have been admitted to intensive care because of the flu.
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