Hepatitis A is an acute liver infection caused by the Hepatitis A virus (HAV). It spreads when you ingest food or water contaminated with the virus or through close contact with an infected person. Unlike Hepatitis B and C, Hepatitis A does not cause chronic liver disease-most people recover fully within a few weeks to months.
Symptoms usually begin 2-6 weeks after exposure and can include:
The Hepatitis A virus spreads via the fecal-oral route. Common ways you can become infected include:
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Hepatitis A often feels like a bad flu with liver swelling. Most healthy adults recover fully with rest and supportive care. Severe complications are uncommon but can occur in older adults or those with existing liver disease.
Your doctor will order blood tests to look for Hepatitis A antibodies. A positive Hepatitis A Ab Total Reactive result confirms you've been exposed to the virus.
The IgG antibody test indicates past infection or immunity from vaccination. A positive IgG result means you're protected against future Hepatitis A infection.
The vaccine is recommended for travelers to high-risk areas, people with chronic liver disease, those with certain occupational exposures, and adults at higher risk of infection.
Yes. A combined Hepatitis A and B vaccine is available in a convenient series to protect you against both viruses with fewer injections overall.
Most people's symptoms peak within 2-6 weeks and then resolve over the next 4-6 weeks. Some may experience fatigue for several weeks longer as their liver fully recovers.
Yes. The virus is passed via the fecal-oral route. Good hand hygiene, especially after using the bathroom and before handling food, plus avoiding cooking for others while ill, reduces the risk of transmission.
No. Unlike Hepatitis B and C, Hepatitis A does not lead to long-term infection. Once you recover, the virus is cleared from your body and you develop lifelong immunity.
If you develop jaundice (yellowing of skin or eyes), severe abdominal pain, persistent vomiting, or symptoms lasting beyond six weeks, consult a hepatology or gastroenterology specialist for further evaluation.
Call GastroDoxs to schedule an appointment with a trusted gastroenterologist in Houston. We provide accurate testing, personalized treatment plans, and vaccine guidance to protect your liver health.