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.

Bird flu infections were detected among cattle veterinarians tested last fall, including two people with no known exposure to animals with the virus, according to a report released by the U.S. Centers for Disease Control and Prevention on Thursday.