| − | '''Hepatitis A''' is a minor viral [[disease]], that usually does not persist in the blood. It is transmitted through ingestion of contaminated food or water. | + | '''Hepatitis A''' is a minor viral [[disease]], that usually does not persist in the blood. It is transmitted through ingestion of contaminated food or water.<ref>http://www.cdc.gov/vaccines/about/terms/glossary.htm#h</ref> |