[A case of Waardenburg-Klein syndrome observed at the Cotonou NUHC].

Waardenburg-Klein syndrome is an "Oculo-dermato-auditif" dysplasia described in 1947 by Waardenburg and by Klein in 1950. Canthus dystopia and congenital deafness are the main symptoms. Three clinical types have been reported: type I: presents the full symptomatology; type II: without canthus dystopia; type III: presents not only the complete syndrome but also an orthro-osteomyodysplasia of the upper limbs.

[Blindness in Benin].

A population-based survey of the prevalence and cause of blindness and poor vision was conducted in the Republic of Benin in 1990 using a stratified cluster random sampling procedure. The survey was designed and implemented through the collaboration of the Ministry of Health of the Republic of Benin and the Programme for the Prevention of Blindness of the World Health Organization (WHO/PBL). Survey data were analyzed at the International Centre for Eye Health, Institute of Ophthalmology, University of London, United Kingdom.

[Importance of studying deficiencies of IgG subclasses (IgG2 and IgG4) in immuno-allergologic practice].

Levels of the sub-classes of immunoglobulins IgG2 and IgG4 have been established by radial diffusion with monoclonal antibodies in 150 subjects. 49 (42 adults and 7 children) showed either a low level of IgG2 (less than 0.42 g/l n = 11) or a reduced level of IgG4 (less than 0.