Virus
Parvovirus B19
Small nonenveloped single-stranded DNA virus
PAR-voh-vy-rus B nineteen
High-yield clue
Small nonenveloped ssDNA + erythroid precursor tropism.
Overview
A small DNA virus used to teach slapped-cheek rash vocabulary, erythroid precursor tropism, and aplastic-crisis coursework associations.
Classification
- Nonenveloped virus
- Single-stranded DNA
- Parvovirus
Lab & identification clues
- Serology/PCR vocabulary
- Erythroid precursor tropism
- Small DNA virus contrast
Associations
- Erythema infectiosum vocabulary
- Aplastic crisis term
- Hydrops fetalis association
Commonly confused with
- Measles virus
- Rubella virus
- Adenovirus
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.