Quick Answer

Hepatitis A happens when you swallow the hepatitis A virus, usually from food, water, or hands contaminated with tiny amounts of infected stool. It causes a short-term liver infection that most people recover from fully, but it can be serious in older adults or those with liver disease.

  • Hepatitis A spreads through the fecal-oral route, not through blood or sex.
  • Hepatitis B and C spread through blood and sexual contact, not food.
  • The virus survives on surfaces and in water for months.
  • Symptoms appear 2 to 7 weeks after exposure.
  • Most people recover within a few months without lasting liver damage.
  • Vaccination prevents hepatitis A effectively.

Context Most Pages Skip

The word 'hepatitis' simply means inflammation of the liver, but the cause matters. Hepatitis A, B, and C are three different viruses with different routes of infection. Hepatitis A is the one you can catch from contaminated food or water, because it lives in stool and travels through the mouth. Understanding this 'fecal-oral' route is key: the virus enters your gut, multiplies, and then attacks liver cells, triggering your immune system to fight back. That immune response is what causes the classic symptoms like jaundice and fatigue. Unlike hepatitis B or C, hepatitis A never becomes a chronic infection, so your liver usually heals completely.

Frequently Asked Questions

How does hepatitis b happen?

Hepatitis A happens when you swallow the hepatitis A virus, usually from food, water, or hands contaminated with tiny amounts of infected stool. It causes a short-term liver infection that most people recover from fully, but it can be serious in older adults or those with liver disease.

How does hepatitis happen?

Hepatitis A happens when you swallow the hepatitis A virus, usually from food, water, or hands contaminated with tiny amounts of infected stool. It causes a short-term liver infection that most people recover from fully, but it can be serious in older adults or those with liver disease.

What will happen if hepatitis b is left untreated?

Hepatitis A happens when you swallow the hepatitis A virus, usually from food, water, or hands contaminated with tiny amounts of infected stool. It causes a short-term liver infection that most people recover from fully, but it can be serious in older adults or those with liver disease.

Why does hepatitis happen?

Hepatitis A happens when you swallow the hepatitis A virus, usually from food, water, or hands contaminated with tiny amounts of infected stool. It causes a short-term liver infection that most people recover from fully, but it can be serious in older adults or those with liver disease.

What can happen if hepatitis is left untreated?

Hepatitis A happens when you swallow the hepatitis A virus, usually from food, water, or hands contaminated with tiny amounts of infected stool. It causes a short-term liver infection that most people recover from fully, but it can be serious in older adults or those with liver disease.

What can happen if hepatitis b is left untreated?

Hepatitis A happens when you swallow the hepatitis A virus, usually from food, water, or hands contaminated with tiny amounts of infected stool. It causes a short-term liver infection that most people recover from fully, but it can be serious in older adults or those with liver disease.

βš•οΈ This page is educational and does not replace advice from a licensed clinician. If you may have been exposed to an STI, get tested β€” most infections are manageable, and many are fully curable.

Sources & Further Reading

Figures reflect CDC surveillance and WHO estimates; they are population statistics, not personal risk predictions.