There have been two new outbreaks of porcine deltacoronavirus, both in nursery barns in Huron County.
There have now been four outbreaks this month, two of porcinedeltacoronavirus and two or porcine epidemic diarrhea virus.
Ontario has been hard hit this year while farmers in other prominent pork-producing provinces, such as Quebec and Manitoba, have kept the viruses out of their herds.