Comparative skin testing with PPD tuberculin, Mycobacterium avium and M. scrofulaceum sensitin in schoolchildren in Saudi Arabia.


SETTING Jizan region, Saudi Arabia. OBJECTIVE To test methodology for studies of tuberculin sensitivity and effectiveness of BCG vaccination programme. DESIGN School children (n = 315) aged 6-12 years simultaneously tested intradermally with PPD tuberculin RT23, 2TU and 0.1 microgram Mycobacterium avium or M. scrofulaceum sensitin. Presence of BCG scar… (More)


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