| Salmonella is an important human and zoonotic pathogens, which caused the number of bacterial food poisoning outbreaks and morbidity from the number of years, is the first in China.so the monitoring indicators of China's food-borne pathogens is Salmonella. Under the existing "Infectious Disease Control Law," by Salmonella infection induced diarrhea is a Class C infectious diseases, but most of their clinical care units is not enough emphasis. So we start into the global Salmonella surveillance network in 2007 in Chongqing, in-depth analysis of Salmonella monitoring results in 2007-2009 in Chongqing, the formulation of prevention and control measures have important guiding significance.In this study, the hospitals case is sporadic monitoring object in Yuzhong District, Shapingba, Jiulongpo District, Banan District, Nanan District, Jiangbei District, Dadukou, Beibei District, Yubei, the nin districts of Chongqing,. in outbreaks of diarrheal disease and food poisoning, Cases meet the surveillance case definition is aggregation monitoring object in Chongqing. Uniform standards and methods of GSS. Collect stool, rectal swab, or vomit samples of monitoring object, Carry out isolation of Salmonella, identify serotype of Salmonella; Case studies carried out on patients of Salmonella infections, Or detailed reasons investigate carried out on Salmonella outbreak/ assemble food poisionin; drug fast of salmonella carried out. Investigate data entry Excel2003 software, Frequency analysis carried out on Indicators, using Epi Info software carried out Chi-square test, Compare clinical features of Salmonella typhimurium and Salmonella enteritidis, Compare differences in attack rate of food poisioning on different dinner ways. The results are as follows:1. Distribution of Salmonella cases in Chongqing: 162 cases of sal,monella were found during 2007-2009. The peak of salmonella was in summer and autumn, The age of higher incidenc is young and middle-aged, Occupational and regional distribution have not clear central tendency. Diarrhea, accompany with fever and bellyache were the main clinical situation, vague pain is the major types of bellyache, Slight dehydration is the major types of dehydration, flavovirens water sample is the major types of character of stool.2. Salmonella typhimurium and Salmonella enteritidis were the main types: 19 serotypes were detected during 2007-2009. Proportions of Salmonella typhimurium and Salmonella enteritidis more than 50%. Salmonella typhimurium and Salmonella enteritidis were the main types. Cases of diarrhea in cases of Salmonella typhimurium infection significantly more than in cases of Salmonella enteritidis infection(χ~2 = 4.00,P <0.05). Cases of fever and bellyache in cases of Salmonella enteritidis infection significantly more than in cases of Salmonella typhimurium infection(χ~2=4.56,P<0.05).3. 19 serotypes of salmonella sensitive to Cefotaxime(CTX); and were resistance to deVariety of antibiotics, The most percentages of resistance is Nalidixic acid(NAL); strains of different serotypes were different in Sensitivity to tantibiotics, The resistance rate of Salmonella enteritidis is higher than that of Salmonella typhimurium.4. Popular Features in Salmonella assemble food poisioning: 25 outbreak food poisionin of diarrhea were caused by salmonella. during 2007-2009. The peak of salmonella was in summer and autumn, 9 serotypes were detected, Salmonella typhimurium and Salmonella enteritidis were the main types in assemble food poisionin. Dinner of outbreak food poisionin caused by three ways: Family day dining,restaurants dinner,banquet held in their own. Attack rate of family day dining more than The other two ways(χ~2=541.16,P<0.05); Preserved duck eggs with Salmonella typhimurium polluted is very doubtful risk factors, Attack rate of eating duck eggs more than The other food(χ~2=58.96,P<0.05).5. compared sporadic case and assemble case, Prevalent serotype is basically the same, pointde that sporadic case is"Tip of the iceberg"of Salmonella infected people, Monitoring of sporadic cases is conducive to understanding the overall trend of epidemic. |
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