Virus
Hepatitis A virus
Nonenveloped positive-sense RNA hepatitis virus
hep-uh-TY-tis A
High-yield clue
Nonenveloped positive-sense RNA + fecal-oral hepatitis vocabulary.
Overview
A nonenveloped RNA virus used to teach fecal-oral hepatitis vocabulary, acute self-limited course framing, and vaccine concepts.
Classification
- Nonenveloped virus
- Positive-sense RNA
- Picornavirus family concept
Lab & identification clues
- IgM serology vocabulary
- Liver enzyme coursework context
- No chronic infection concept in basic study
Associations
- Foodborne outbreak vocabulary
- Travel/public-health framing
- Vaccine concept
Commonly confused with
- Hepatitis B virus
- Hepatitis C virus
- Norovirus
Your notes
Original student-study summary. Sources checked: OpenStax Microbiology 2e, NCBI Bookshelf Medical Microbiology, and CDC topic pages where applicable; reviewed 2026-06. Educational only; no diagnosis, treatment, dosing, or specimen-handling guidance.