Came across an interesting page on the HK Centre for Health Protection website. It lists out all the "Notifiable Infectious Diseases" in Hong Kong, by month.
A few statistics suprised me, including Creutzfeldt-Jakob disease (Mad Cow), Legionnaires, Tuberculosis and Hep C. It also lists food poisoning outbreaks and people affected.
Some lazy Friday afternoon reading:
Centre for Health Protection