
ALT Positive tests (%) for flu Line chart showing flu positivity from October 2025 to October 2026. Following a decline after the winter peak, positivity remained low through spring and summer before increasing in recent weeks. The latest trend shows flu positivity remaining broadly stable. Data from: 20 October 2025 – 18 October 2026 Source: SGSS: England only; 7-day-rolling average

ALT Positive tests (%) for flu Line chart showing flu positivity from October 2025 to October 2026. Following a decline after the winter peak, positivity remained low through spring and summer before increasing in recent weeks. The latest trend shows flu positivity remaining broadly stable. Data from: 20 October 2025 – 18 October 2026 Source: SGSS: England only; 7-day-rolling average
































