The document of the month
Document of the month: January 2016
Many people do not even know of the existence of the public health officer but benefit at every turn from his activities. In Liverpool, a team of physicians, inspectors and laboratory workers watch over the health of the city's inhabitants, 24 hours a day and 365 days a year.
Public health officers measuring the blackness of smoke.
WHO photo by Spooner. United Kingdom, 1963.