Serological and virological surveillance

Where laboratory facilities permit, a record of certain diseases can be obtained from serological or virological studies. An example is the use of anonymous testing of blood samples collected at antenatal clinics for HIV and hepatitis B infections. Care must be taken to ensure that the data are representative of the population and are measured continuously.

As the incidence of a parasitic disease declines, it becomes increasingly difficult to detect the parasite and serological surveillance can be of more value. This method has been used in malaria programmes nearing eradication.

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