# WHO recommends influenza vaccine composition for 2027 southern season

> WHO announced recommended viral components for influenza vaccines intended for the 2027 southern hemisphere season, following an international consultation.

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- Section: Health
- Published: 2026-10-06T08:59:02+00:00
- Updated: 2026-10-07T00:50:30+03:00
- Source review period: 2026-09-25
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WHO announced recommended viral components for influenza vaccines intended for the 2027 southern hemisphere season, following an international consultation.

For egg-based vaccines, WHO recommended A/Missouri/11/2025 (H1N1)pdm09-like, A/Darwin/1454/2025 (H3N2)-like and B/Tokyo/EIS13-175/2025 (B/Victoria lineage)-like viruses. Cell culture, recombinant protein or nucleic acid vaccines share the H1N1 component; the other recommendations are A/Darwin/1415/2025 (H3N2)-like and B/Pennsylvania/14/2025 (B/Victoria lineage)-like viruses.

WHO makes recommendations twice a year after experts review surveillance through the Global Influenza Surveillance and Response System and other sources. From February to August 2026, A(H1N1)pdm09, A(H3N2) and B viruses circulated in varying proportions.

## Data

### Health development announcement

Announcement date of the development reported by the source.

Methodology: The timeline records the source publication date of the health announcement; it infers no separate implementation date or outcome.

| date | label | description | status |
|---|---|---|---|
| 2026-09-25 | WHO recommends influenza vaccine composition for 2027 southern season | WHO announced recommended viral components for influenza vaccines intended for the 2027 southern hemisphere season, following an international consultation. | occurred |

Sources: <https://www.who.int/news/item/25-09-2026-recommendations-announced-for-influenza-vaccine-composition-for-the-2027-southern-hemisphere-influenza-season> · Download data: [JSON](https://newsverum.com/api/v1/articles/who-influenza-vaccine-composition-southern-2027/data/health-announcement?lang=en&format=json) · [CSV](https://newsverum.com/api/v1/articles/who-influenza-vaccine-composition-southern-2027/data/health-announcement?lang=en&format=csv)

## Sources

- [World Health Organization](<https://www.who.int/news/item/25-09-2026-recommendations-announced-for-influenza-vaccine-composition-for-the-2027-southern-hemisphere-influenza-season>) (Source checked: 2026-10-06; Published: 2026-09-25)

## Correction history

- 2026-10-07T00:50:30+03:00: German and Portuguese editions and translations of the data and correction explanations have been added to this article.

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