[An epidemic of cholera in the city of Pemba (Mozambique) in 1983].

The purpose of the epidemiological study about 205 suspected hospitalized cases of cholera was to determinate which model of transmission was the most important. From the results, we noticed that direct non-waterborne has been more frequent than waterborne transmission (mainly in the infection of family contacts of index cases). We also found that virulence of the Vibrio cholerae El Tor responsible was quite close of virulence of the Vibrio cholerae classical.