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[Microscopy laboratories for the diagnosis of tuberculosis in Madagascar: quality control]
H Ramarokoto1, B Cauchoix, L Ranivoarisoa
1Programme National de Lutte Anti-Tuberculeuse, Direction de la Lutte contre les Maladies Transmissibles (DLMT), Ministère Santé Madagascar, BP 460, 101 Antananarivo, Madagascar.
Abstract:
As part of the National Tuberculosis Program (NTP), a quality control of the slides (search of acido-fast-bacilli in the sputa) of the Treatment and Diagnosis Centers (TDC) forming the National Laboratory Network was carried out in 1996. 60 TDC of the 165 TDC (36%) had been controlled according to the system of double reading of the smears. The global concordance of the results in the 60 TDC is satisfactory since it was of 94%. Reliability of smears positive was of 83%. For the negative smears reliability, 14% of the TDC had a low or insufficient level. A good quality of smears was observed in 40% of the centers. The TDC that had both positive and negative reliability at 100% were 23 (38%) of which 13 had good quality of smears. Those were especially found in Antananarivo, Toliara, Fianarantsoa and Mahajanga.