“…A growing number of reports indicate that this pattern of skin infection by C. diphtheriae with little or no evidence of clinical illness is widely prevalent throughout both wet and dry tropical regions e.g. South Sea Islands (Liebow et al 1946; Bacon & Marples, 1955;Marples & Bacon 1956;Markham & Stenhouse, 1959), New Zealand Maoris (McCarthy & Marples, 1954), Burma (Livingood, Perry & Forrester, 1946;Thaung et al 1978), India (Ayyagari, Venugopalan & Ray, 1977), Colombia (Bennett, 1967), Trinidad (Bray et al 1972), Uganda (Bezjak & Farsey, 1970). Reports (Dixon & Thorsteinson, 1969;Jellard, 1972Jellard, , 1978 have revealed that a similar condition occurs amongst Eskimos, North American Indians and Metis in Northern Canada, and the question arises whether low socio-economic conditions and standards of personal hygiene rather than climate are the more important predisposing factors.…”