Control of communicable disease at district level.
D002497:Centralized Hospital Services; D003140:Communicable Disease Control / Q000266:history; D003142:Communication; D003153:Community Health Services / Q000458:organization & administration; D005568:Forms and Records Control; D006280:Health Workforce; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D008499:Medical Records; D009726:Nurses / Q000706:statistics & numerical data; D006113:United Kingdom