Try the following searches in the databases to the right. You can cut and past the search strings below (replacing [disease] with the disease and [country] with the country/city/region you are researching) into the database search boxes.
[disease] AND [country]
[disease] AND [country] AND (incidence OR prevalence OR mortality OR morbidity OR epidemiology)
Google can help you find national and local government statistics on health and disease for your country. Try these two searches:
[country/region] [department of health]
[country/region] [ministry of health]