Vaccine
Influenza vaccine (inactivated)
Brand names: Quadrivalent flu vaccines, Fluad (adjuvanted), Flucelvax (cell-based), Fluzone HD
Adult dose
Dose: Single annual IM dose; high-dose / adjuvanted formulations preferred ≥65y per current Green Book
Route: IM
Frequency: annually
Clinical pearls
- UK national flu programme: ≥65y, pregnancy, chronic illness, healthcare workers, children's nasal spray programme separately
Contraindications
- Severe hypersensitivity to previous dose or vaccine constituent (e.g. egg in some formulations)
Side effects
- Local reaction
- Myalgia
- Headache
- Pyrexia
- Guillain-Barré (very rare)
Interactions
- Other vaccines may be co-administered
Reference: BNF; UK Green Book; JCVI; annual NHS flu letter; https://bnf.nice.org.uk/drugs/influenza-vaccine-inactivated/. Verify against your local formulary and the latest BNF before prescribing.
Related
Curated clinical cross-links plus same-class fallbacks.
Calculators
- HE-MACS (History and ECG-Based Manchester ACS Risk Score) · ACS Risk Stratification
- Weight-Based Levothyroxine Dose Calculator · Thyroid
- C-Peptide to Glucose Ratio · Diabetes Classification
- Number Needed to Treat (NNT) / Number Needed to Harm (NNH) · Evidence-Based Medicine
- IMDC (Heng) Score for Metastatic RCC · Renal Cell Carcinoma
- International Prognostic Index (IPI) for DLBCL · Lymphoma
Drugs
Pathways
- Infective Endocarditis · ESC 2023 Infective Endocarditis Guidelines; NICE NG41
- Eczema Herpeticum · BAD; NICE CKS
- Suspected Bacterial Meningitis (Adult) · NICE NG240 (2024); NICE NG143 (paeds)
- Clostridioides difficile Colitis · NICE NG199 (2021); IDSA/SHEA 2021
- Returning Traveller — Fever · NaTHNaC; PHE; ESCMID 2018
- Malaria — Diagnosis & Management · PHE 2016; WHO 2023