Virus
Influenza virus
Segmented negative-sense RNA virus
in-floo-EN-zuh
High-yield clue
Segmented negative-sense RNA explains reassortment and antigenic shift vocabulary.
Overview
An enveloped segmented RNA virus used to teach antigenic drift/shift, respiratory transmission vocabulary, and vaccine-updating concepts.
Classification
- Enveloped virus
- Negative-sense RNA
- Segmented genome
- Orthomyxovirus family concept
Lab & identification clues
- Hemagglutinin/neuraminidase vocabulary
- PCR/rapid antigen test concepts
- Antigenic drift and shift
Associations
- Respiratory illness vocabulary
- Seasonal vaccine concepts
- Pandemic reassortment concept
Commonly confused with
- Rhinovirus
- SARS-CoV-2
- RSV
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.