Evidence is presented about the limitation of information available on prevalence/incidence of deafness and hearing impairment in the developing world; particularly in Latin America. Two questionnaires on audiological resources and services were mailed to Latin American and Caribbean countries in general and to Central American nations in particular. The information returned by Argentina, Chile, Colombia, Costa Rica, Cuba, Belize, El Salvador, Grenada, Guatemala, Honduras, Mexico, Nicaragua, Panama, Puerto Rico and Uruguay was analysed. Data was gathered about epidemiological studies on hearing impairment, about specific programmes, such as early identification of hearing impairment, national registers on deafness and programmes on hearing screening. Training programmes and availability of professionals in the field of hearing and deafness is also shown. Hearing services, hearing aids provision, hearing testing equipment, professional organization and legislation in audiology is also documented. It is our conclusion that hearing impairment is a low priority for health systems in the developing world, technology continues to be excessively costly and material and human resources are limited, and services are poor and restricted.