title: [Epidemiology of occupational disease among bricklayers in Nigeria. Effects of age and duration of contact].
abstract: Clinical and epidemiological investigations on 240 bricklayers in Nigeria show an incidence of 2,3% of cement-eczema, 2,0% of wear and tear dermatosis, and 2,8% of sensitivity against chrome. None of the examined showed a concomitant reaction to cobalt chloride. The workers with longest professional contact with cement showed the highest incidence of cement-eczema, and sensitivity against chrome. Workers of the lower age group had a higher alkali neutralization power of the skin than the older workers. The same tendency was noticed in the control tests. Generally, the African skin showed a higher alkali neutralization power than the white skin. The discussion tried to expand on the possible factors which could have influenced the observed rate of sensitization in Nigeria.
mesh_terms: D000367:Age Factors; D003252:Construction Materials / Q000009:adverse effects; D003877:Dermatitis, Contact / Q000453:epidemiology*; D009783:Dermatitis, Occupational / Q000453:epidemiology*; D006229:Hand Dermatoses / Q000453:epidemiology; D006801:Humans; D008297:Male; D009549:Nigeria; D009790:Occupations; D013997:Time Factors
vernacular_title: Epidemiologie der Berufskrankheit von Maurern in Nigeria. Einflüsse des Alters und der Kontaktdauer.