Evolution Of Typhoid Bacteria: Researchers Warn Of Increased Spread Of Resistant Strains

... Researchers are investigating the evolution of the bacterium Salmonella typhi and warn of an increased spread of resistant strains. Results of a new study indicate that asymptomatic carriers played an essential role in the evolution and global transmission of Salmonella Typhi. The rediscovered importance of the carrier state predicts that treatment of acute disease, including vaccination, will not suffice to eradicate this malady. ...