The Public Health Agency of Canada said Wednesday it’s purchased 500,000 doses of a human vaccine to protect against avian influenza for those most at risk from being exposed to the virus by infected animals.

The agency said it secured the initial supply of GSK’s Arepanrix H5N1 A/America vaccine by leveraging an existing agreement.

“While the current risk to the public remains low, individuals with higher-level exposure to infected animals are at increased risk and should take appropriate precautions,” the agency said in a statement.