# CSL Seqirus

Type: Company

Source: Healthcare Intelligence Brief — https://gethealthbrief.com/entity/csl-seqirus
Canonical HTML page: https://gethealthbrief.com/entity/csl-seqirus

## Recent coverage (1 stories)

### US Flu Vaccine Effectiveness Drops Below Historical Averages for 2025-26 Season
2026-03-14 23:47:43 · Sentiment: Neutral · Impact: 5/10 · Sources: 2

Preliminary CDC data indicates that the 2025-2026 influenza vaccine provided lower-than-expected protection, with effectiveness falling to approximately 32%. The findings highlight a significant mismatch between the vaccine's composition and the dominant H3N2 variant, sparking calls for faster manufacturing platforms.
Full story: https://gethealthbrief.com/story/flu-vaccine-effectiveness-decline-2026

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