The need for rodent control

摘要

Speaking at the Egg Processing Workshop and Poultry Symposium in June in California, Hailu Kinde, University of California School of Veterinary Medicine, addressed Salmonella Enteritidis in the environment. It was-noted that in the recent years in Southern California human S. enteritidis infection has increased by ten fold. In Los Angeles county alone 501 cases of S. enteritidis were reported during the period of April through July 1994. Over 90% of the Salmonella enteritidis isolates from these cases were phage type 4. S. enteritidis, phage type 4 was a strain rarely isolated in the United States before 1990, and the first food borne out-break was not reported until April of 1994, in El Paso Texas. The epidemiologic investigations linked many of these outbreaks in humans to the consumption of fresh grade A eggs. However, it is unknown how much of this increase was actually egg associated. About the same time, in May of 1994, the first documented case of S. enteritidis, phage type 4 infection occurred in a commercial layer flock in Southern California.