Causes and Diagnoses
Causes and Diagnoses of Hepatitis A
The hepatitis A virus (HAV) causes hepatitis A infection. It is most commonly spread through contact with contaminated stool. That may occur when:
- You eat food prepared by an infected person who doesn’t wash his or her hands after using the bathroom.
- You don’t wash your hands properly after changing the diaper of someone who has the infection.
- You have close contact or sex with someone who has the infection.
- You drink contaminated water or eat food that’s rinsed in contaminated water.
Hepatitis A is not spread through nasal or respiratory secretions, breast milk or casual contact.
Diagnosing hepatitis A
Hepatitis A is diagnosed based on your symptoms and a blood test that looks for the hepatitis A virus antibodies.