Worldwide spread of Salmonella enterica serovar Weltevreden originated from Southeast Asia

Salmonella enterica serovar Weltevreden is originated from India and has become the most common non-typhoid Salmonella in south and southeast Asia due to its special commensalism ability, which can cause zoonosis worldwide through population floating, consumption of contaminated food and seafood. In China, S. Weltevreden circulates in the southern area. A multi-drug resistant clone (MDR-ACSSuT) was detected in a chicken farm for the first time, while human strains are mostly quite sensitive to antibiotics currently. Moreover, blood infections were detected for the first time too. S. Weltevreden has colonized in shellfish and poultry breeding and raising chain and food chain, and more outbreaks of S. Weltevreden infection have been reported. It is necessary to learn about the practices in preventing and control foodborne infection, case importation and the mechanism of outbreak survey of S. Weltevreden in developed countries.