epidemiology of hepatitis A

Hepatitis A is a contagious liver infection caused by the hepatitis A virus, mostly transmitted through ingesting contaminated food or water or close contact with infected individuals. It spreads easily in areas with poor sanitation and hygiene. Most people recover fully without lasting effects, but in some cases, especially in older adults or those with existing health issues, it can cause more serious illness. Vaccination, good hygiene, and proper sanitation are effective ways to prevent infection. Globally, hepatitis A cases fluctuate based on sanitation standards and vaccination coverage across different regions.