Prevalence data from sources such as population surveys can be a useful complement to case based surveillance data for hepatitis B. Case-based surveillance has limitations as most diagnosed cases are chronic in nature and detection of cases depends largely on testing practices. Prevalence data can therefore contribute towards a fuller understanding of the epidemiology of hepatitis B.
This key provides the non-specialist with reference material to help recognise an invasive mosquito species and gives details on the morphology to help with verification.
The Surveillance Atlas of Infectious Diseases is a tool that interacts with the latest available data about a number of infectious diseases. The interface allows users to interact and manipulate the data to produce a variety of tables and maps.
Laboratories should receive clinical and epidemiological information for establishing their investigation strategy, including date of onset of illness, travel history (date and locations), past flaviviral immunisation records and pregnancy status.