Answer
No. Its weakened, cold-adapted viruses cannot replicate efficiently at normal body temperature, although mild nasal symptoms or fever can occur.
Sources for this answer
- Fluenz nasal spray suspension Influenza vaccine (live, nasal) — Current selected SmPCemc · Summary of Product Characteristics
- NHSNHS · NHS medicine guidance
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.