The UK Health Security Agency (UKHSA) has published its week 51 national surveillance report, containing data up to week 50 and covering activity through 13 December 2026. The report forms part of an ongoing official statistics series that tracks respiratory disease trends across the United Kingdom.
What the Report Covers
According to the UKHSA, the surveillance report monitors three broad areas of respiratory illness: COVID-19 activity, seasonal influenza, and other seasonal respiratory conditions. The publication is released on a rolling weekly basis, providing public health authorities and researchers with a consistent data stream for tracking disease trends over time.
Part of an Ongoing Surveillance Series
The week 51 report is the latest instalment in a long-running official statistics programme maintained by the UKHSA. By tracking multiple respiratory illnesses within a single report, the series allows for comparative monitoring of how different pathogens are circulating simultaneously — a pattern that has become increasingly relevant during winter months when flu and COVID-19 activity has historically overlapped.
The full report is available via the UKHSA official statistics page.