A second person in the United States has been confirmed as having avian influenza.

The Centers for Disease Control (CDC) said the new human case of avian influenza H5N1 was identified in a person in Michigan who had direct exposure to dairy cattle presumed to be infected with the virus.

The person is a worker on a dairy farm where H5N1 virus has been identified in cows.

READ MORE | H5N1 bird flu spreads to cattle in America

Similar to the Texas case, which was confirmed last month, the patient only reported eye symptoms, according to CDC.

Avian influenza A (H5N1) is a type of flu virus that usually infects wild birds and can spread to domestic birds and other animals.

It occasionally infects people, though it is extremely rare for it to be transmitted from one person to another.

Initial testing shows the virus has not changed in a way to make it more likely to spread among humans.