A suspected anthrax outbreak at Wood Buffalo National Park has been confirmed. Samples sent to a lab early last week came back positive on Thursday said Parks Canada in a news release the same day, confirming the presence of anthrax in at least one dead bison at the park. Bison will usually contract the disease from contaminated soil while wallowing in dust baths. Spores develop in hotter temperatures and fluctuating water levels. Cooler temperatures will kill the spores and slow the outbreak.