Overview
- The World Health Organization reports the seasonal peak has arrived 3–6 weeks early, with the H3N2 subclade K driving rapid spread across multiple Northern Hemisphere countries.
- The UK Health Security Agency projects up to 8,000 influenza hospital admissions in England next week, while Spain’s incidence is about ten times last year and several nations have activated surge measures.
- Scientists say mutations in the variant’s surface proteins increase transmissibility and allow partial escape from prior infection or vaccination, though available antivirals remain effective.
- Simultaneous circulation of RSV and SARS‑CoV‑2 is complicating diagnosis and increasing demand, leading to combined testing guidance and renewed masking in clinical settings.
- Health authorities urge vaccination for older adults, young children and people with chronic conditions, and experts in South America recommend preparing earlier campaigns, including a March rollout in Argentina.