Handicapping and genetic disorders in Zimbabwean institutions: a diagnostic survey

A diagnostic survey was undertaken in twelve Zimbabwean institutions for deaf, crippled and mentally handicapped individuals. A total of 1396 persons were evaluated of whom 885 were deaf, 356 physically disabled and 155 were mentally retarded. Acquired causes formed the largest aetiological group throughout the survey, but a high frequency of inherited crippling disorders was encountered (125 individuals). Down Syndrome accounted for almost one third of children with mental handicap. Undifferentiated autosomal recessive deafness was found in 87 persons, most of whom were from the Shona people.