Up to eight Irish poultry farms have been hit by salmonella outbreaks.
The Department of Agriculture is investigating a number of salmonella infections but it has not been confirmed if any are in Donegal.
A number are understood to be on farms in Cavan.
Salmonella is a bacteria that is considered a risk to public health, and so the discovery of infection in poultry flocks is being treated seriously by authorities.
Detection of the disease means all birds on the eight farms will be culled and none will enter the food chain. Culling is already under way on some of the farms.
Salmonella is a public health concern, and can cause serious illness, although some infected people will only experience mild illness.
The Food Safety Authority of Ireland said people infected with Salmonella typically develop symptoms between 12 and 36 hours after infection, but this can range between six and 72 hours.
The most common symptom is diarrhoea, which can sometimes be bloody.
Other symptoms may include fever, headache and abdominal cramps.
The illness usually lasts 4-7 days.
