[Traveller's diarrhea: which vaccines?].

Diarrheal diseases are a major cause of child morbidity and mortality, particularly in developing countries. It is estimated that diarrheal diseases and typhoid fever cause around 2.5 million deaths per year in the world. Four bacteria and one virus share this responsibility: Shigella spp, Escherichia coli ETEC, Vibrio cholerae, Salmonella typhi and rotavirus. People travelling in countries with high endemicity of diarrhoeal diseases risk facing these four bacteria or the less common rotavirus, which is usually active in infants, even though some cases of diarrhoea due to rotavirus have already been reported in adults. The usual recommendations concerning basic measures of hygiene are most of the time quickly forgotten and followed only by a small number of travellers (12). Therefore, apart these useful recommendations, it is therefore necessary to consider complementary actions for controlling these diseases which are mainly transmitted by contaminated water and food. This article aims at giving an overview of currently available and future vaccines for preventing travellers' diarrheas.