For some reason FA and kaplan neglects to mention Staphylococcus Aureus, which has 11 serotypes/strains that have capsule and there should be a correction in that it is not group B streptococci, both beta hemolytic groups A and B produce capsule. Also Campylobacter jejuni has 47 capsular strains. Some other bacteria are partially encapsulated or unfinished or what is called microcapsules that functions and not completely understood. This is the case with Citrobacter (there is development of vaccines against Salmonella due to similar composition of vi polysacharide capsule )and Bordetella pertussis. Also vibrio cholera does have 1 strain (139) that is encapsulated.