Quarterly Communicable Disease Review January to March 1998. From the PHLS Communicable Disease Surveillance Centre.
D002690:Chlamydia Infections / Q000453:epidemiology; D003141:Communicable Diseases / Q000453:epidemiology*; D014943:Global Health; D015658:HIV Infections / Q000453:epidemiology; D006509:Hepatitis B / Q000453:epidemiology; D006801:Humans; D007251:Influenza, Human / Q000453:epidemiology; D008589:Meningococcal Infections / Q000453:epidemiology