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News
Canada's vaccine advisory body reaffirms early fall flu shots as the gold standard. NACI's updated 2026–2027 guidance confirms that while vaccine-induced immunity does wane, it still offers protection for six months or more — enough to cover most of the respiratory season. No midseason booster is recommended, and early vaccination remains the best bet for sustained protection.
Canada's National Advisory Committee on Immunization (NACI) has released its updated influenza vaccine statement for the 2026–2027 season, reaffirming that the flu shot should be offered annually to everyone aged 6 months and older (barring medical contraindications). The headline update includes new evidence on the optimal timing of vaccination — though current data remains "insufficient" to tailor timing recommendations for specific populations.
The bottom line stays the same: get vaccinated in early fall. Experts note that flu season peaks are unpredictable, and waiting too long risks getting infected before immunity kicks in — which takes about two weeks post-shot. For high-risk individuals, "as soon as you can" is the clear advice.
Key Takeaways:
Why it matters: With flu season timing remaining unpredictable year to year, clear and consistent guidance helps clinicians and patients make informed decisions. The updated NACI statement reinforces that early action — not perfect timing — is what delivers the most reliable protection.
