Generate an explanation for the given claim using the provided supporting material from the paragraph. Please consider the following points while generating an output. 1) The claim will always have supporting proof in the paragraph, and the paragraph will have a clear point of view supporting the claim. 2) There can be instances where direct correlation to the claim is not available. Make use of the sentences in the paragraph to provide a corresponding output supporting the claim. 3) The explanation should be at least one and at most twelve sentences long.

Paragraph: The Department of Public Health says more cases that may be related have been identified in Cherokee and Marshall counties, with March 3 as the latest known symptom onset. Currently, there are 22 cases in Jackson County, 12 in DeKalb County and one case in Marshall County. For more details about the current outbreak, please see Alabama's Hepatitis A Outbreak Report at http://www.alabamapublichealth.gov/immunization/assets/HepatitisAoutbreakreport.pdf . Health experts say to reduce the spread of the disease, people should get vaccinated as soon as possible. In addition, they should wash hands frequently especially before, during and after preparing food, after using the toilet, after changing diapers and after touching garbage. Claim: NE Alabama hepatitis A outbreak grows.
Alabama health authorities are urging the public to get vaccinated after a hepatitis A outbreak in DeKalb and Jackson counties continues to spread.