<prompt> Primarily human pathogenic bacteria isareSalmonella typhiS. paratyphi AS. paratyphi BAll of the above  <response>: S. typhi S. paratyphi A, B and C : Man is the only natural host. Transmission ingestion of food water contaminated by the feces of either a carrier or a case of enteric fever. Animal commensals: S. typhimurium S. enteritidis S. newpo S. dublin S.choleraesuis 