A Kentucky fast food worker has been diagnosed with Hepatitis A.

McDonald's (MCD) - Get Report is working with Kentucky health officials after the Ashland-Boyd County Health Department said that one of its employees was diagnosed with the liver disease on Wednesday. 

Local news reported that all employees at the location received the Hepatitis A vaccine this week and the company required a vaccination policy for all workers. The McDonald's location voluntarily closed operations to disinfect the restaurant after it was notified of the case. 

Neighboring West Virginia has had 98 confirmed cases of Hepatitis A this year, with some of them caused by the same strain that has infected people across the country. 

The Centers for Disease Control and Prevention has declared a multi-state outbreak of the virus in March 2017. Since then, at least 1,200 cases have been reported. More than 40 people have died. 

Hepatitis A is spread when a person ingests fecal matter, including microscopic amounts. It can also be transmitted when an infected person does not wash their hands properly after going to the bathroom or changing a diaper and then touching an object or food. 

Hepatitis A can also be transmitted sexually.