The number of mysterious neurological illnesses among workers who processed pig brains at pork plants in three states has risen to as many as 24.
According to Dr Daniel Lachance, a Mayo Clinic neurologist, there are now 18 confirmed cases among people who have worked at the Quality Pork Processors plant in Austin, Minnesota – an increase from the 13 cases recorded in February .
Lachance added that there are now about five cases among workers at a pork plant in Indiana, compared with two confirmed earlier, and one recently identified case at a plant in Nebraska.