[An immunisation coverage survey in the Kouilou area of Congo-Brazzaville].

An internal review of the expanded program of immunisation undertaken on the basis of daily data collected over the past five years from 1993 to 1997 in the region of Kouilou revealed a weak coverage level for all the antigens, associated with a strong dropout rate. In August 1999, a vaccination coverage survey was carried out on three strata of the Kouilou area in order to determine the proportion of children vaccinated by antigens. The method used is that of sampling clusters.

[Survey of measles vaccine coverage in Brazzaville].

Measles is an infectious disease that continues to be a significant cause of morbidity and mortality among children in Brazzaville. A measles vaccination coverage survey was conducted for children aged 9 to 23 months. A standard EPI cluster sample was applied in two areas: urban and peri-urban.

[African human trypanosomiasis: study of a scoring system of presumptive diagnosis in the Congo].

A case-control study was carried out in the Congo to define a scoring system based on a number of clinical and epidemiological criteria of African trypanosomiasis due to Trypanosoma brucei gambiense which could be used by peripheral health services to establish a diagnosis. The survey comprised 163 cases and 326 controls. Clinical signs and symptoms were fever, headache, pruritus and skin lesions due to scratching, diarrhoea, oedema, cervical adenopathies, sleep rhythm disturbances, changes in appetite, amenorrhoea or impotence, mental confusion, neurological signs, and other minor clinical disturbances.