UKHSA

The UK Health Security Agency (UKHSA) is a United Kingdom government executive agency responsible for protecting public health by preventing, detecting, and responding to infectious disease threats and other health hazards. It operates under the Department of Health and Social Care and coordinates with NHS bodies, local authorities, and international partners.

It was established in 2021, succeeding Public Health England in consolidating public health protection functions and related responsibilities. The agency serves the United Kingdom with a focus on national and cross-border health security, while engaging with the devolved administrations.

Core functions include disease surveillance and data analysis; laboratory services and scientific testing; risk assessment and evidence-based advice to government; incident response and outbreak management; and public information and risk communication to support informed decision-making.

UKHSA concentrates on infectious diseases such as influenza and other respiratory pathogens, antimicrobial resistance, and broader health hazards including environmental and chemical threats. It also coordinates preparedness and response for health emergencies and international health security partnerships.

Governance and structure: UKHSA is an executive agency reporting to the Department of Health and Social Care, led by a chief executive and senior leadership, with collaboration across NHS organizations, local authorities, universities, and international bodies.