Diversity in typhoid bacteria linked to higher mortality rates

Worldwide, 20% of the bacterial strains that cause typhoid fever have genetic variations in their external layer, called Vi capsule, that provide higher virulence, higher infectivity and high antibiotic resistance, Cornell researchers have discovered, possibly impacting the disease's propagation and vaccine efficacy. https://phys.org/news/2024-07-diversity-typhoid-bacteria-linked-higher.html