Two more illnesses have been linked to raw goat milk sold from a Colorado farm, the Boulder County Health Department announced Friday.

The announcement brings the total number of E. coli and Campylobacter reports in connection with the Billy Goat Dairy in Longmont, Colo., to 26.

Billy Goat Dairy sells unpasteurized milk to 43 households as part of a herd share program, in which residents purchase a share of a goat in exchange for raw milk. Health officials are contacting members of the program to check for symptoms, according to the Daily Camera.

"We're still trying to determine if it's isolated or ongoing," said Murielle Romine, of Boulder County Public Health, to The Daily Camera. "It is just very hard to gauge at this point if there is an exact date of suspect milk."

The Billy Goat Dairy was ordered by the health department to stop distributing milk during the investigation. Department officials said they discovered sanitation issues, incorrectly labeled products and milk being stored at improper temperatures. The dairy will be allowed to resume selling raw milk once all the problems have been addressed, and the investigation is complete, according to CBS4.

Raw milk is milk that has not been heated to a temperature capable of killing harmful bacteria, such as E. coli and Salmonella. While interstate sales of raw milk are illegal, unpasteurized milk sales are legal in 26 states. In Colorado, raw milk sales are illegal in stores, but are allowed as part of herd share agreements.

Also known as gastro flu, Campylobacter can cause diarrhea, vomiting, abdominal pain, fever, headache and muscle pain. E. coli can lead to severe stomach cramps, bloody diarrhea and vomiting two to five days after eating the contaminated products.