Three more outbreaks of African Swine Fever have been reported by Chinese authorities this week.
The government says the herds have been eliminated and quarantine zones established.
The country has been struggling to contain the disease since the first outbreak in August.
Canadians are urged to be on high biosecurity alert because the disease is deadly, highly contagious and can be spread by any pork product.
That includes meal leftovers fed to pigs and rendered pig parts used as feed.
There is no treatment.
It can wipe out an entire herd within 10 days without showing any clinical signs.
It is no threat to human health.