Through which transmission routes is hepatitis A spread?

Hepatitis A, commonly known as “hepatitis A” or “HAV,” is an infectious disease caused by the hepatitis A virus (HAV). How is hepatitis A transmitted?

Transmission Routes of Hepatitis A

Hepatitis A is primarily transmitted via the fecal-oral route. It is an infectious disease caused by HAV infection, characterized predominantly by inflammatory liver lesions. Patients with hepatitis A and asymptomatic carriers serve as reservoirs of infection. The virus is shed exclusively in feces; therefore, transmission occurs mainly through the fecal-oral route. Contamination of drinking water sources, food, vegetables, or eating utensils with fecal matter can lead to outbreaks; large-scale contamination of water or food supplies may result in epidemic spread.

Hepatitis A typically presents acutely. In the early stage of illness, patients may experience fever, fatigue, loss of appetite, nausea, aversion to greasy foods, vomiting, and dark-colored urine. Concurrently, jaundice—manifesting as yellowing of the skin and sclera—may develop, along with right upper quadrant abdominal pain, hepatomegaly, and, in some cases, splenomegaly. Symptoms usually persist for approximately two weeks; thereafter, jaundice gradually subsides and clinical symptoms improve over the subsequent one to two weeks.

Currently, the most effective preventive measure is pre-exposure vaccination. Following immunization, the body produces protective antibodies that effectively prevent infection. Additionally, it is advisable to avoid crowded public places whenever possible. After visiting such locations, thorough handwashing and disinfection are essential. Dietary precautions are also critical: avoid consuming undercooked meat or seafood. We hope this information has been helpful. Wishing you good health and a joyful life!