The Fargo, North Dakota, Catholic Diocese’s new bishop may have exposed hundreds of church members to hepatitis A.
The state health department issued an advisory of exposure on  for anyone who attended church and had communion at four churches.
Bishop John Folda contracted the infection through contaminated food while attending a conference for newly ordained bishops in Italy last month.
Hepatitis A virus causes liver infection and is easily spread if people do not wash their hands thoroughly after using the restroom or changing a diaper or soiled sheets, then touch their mouths, prepare food or touch others with contaminated hands.
Symptoms include fever, tiredness, loss of appetite, nausea, abdominal discomfort, dark urine, pale stools and jaundice.
Although rarely deadly, the virus can cause serious illness.