Typhoid vaccines: WHO position paper -- March 2018.

The article reports that the World Health Organization has issued a series of position papers on vaccines and combinations of vaccines against diseases that have an international public health impact. Topics include the use of GRADE methodology to assess the quality of the available evidence, a weblink that features description of the processes followed for the development of vaccine position papers, and inter- and intra-country heterogeneity in typhoid fever incidence in Asia and Africa.