Various cardiac diseases including rheumatic heart disease have been reported from this part of the world (Houghes and Yousuf, 1930; Banerjea, 1935; Kutumbiah, 1940; Ibrahim, 1957; Ibrahim 1966) thereby nullifying the earlier observation (Clarks, 1930) that rheumatic fever does not occur in the tropics. These. studies were made mainly from hospitalised patients particularly with regard to rheumatic and ischaemic heart diseases…