Infectious diseases: monthly or four-weekly number of reported cases, 1977 and 1978.
D003141:Communicable Diseases / Q000453:epidemiology*; D006069:Gonorrhea / Q000453:epidemiology; D006801:Humans; D012061:Relapsing Fever / Q000453:epidemiology; D012288:Rickettsiaceae Infections / Q000453:epidemiology; D013587:Syphilis / Q000453:epidemiology; D014352:Trypanosomiasis / Q000453:epidemiology