The hospitalization comes just days after bird flu cases were also confirmed in people in Nevada and Ohio. The Nevada patient was not hospitalized and only had mild symptoms, local health officials have said. Ohio's health department has not commented on the status of their bird flu case, despite repeated requests.

The Wyoming Department of Health said on Friday it has identified its first human case of H5N1 bird flu in the region, making it the third confirmed instance of hospitalization related to the infection in the United States.

H5N1 bird flu is branching out. New data from the Centers for Disease Control and Prevention indicates that a second type of H5N1 has likely spread from dairy cows to humans.