Objective To compare different disinfection methods for skin and bottle caps on the detection rate of coagulase negative staphylococcus(CNS)from blood culture,and provide basis for improving collection process and accuracy of blood culture.Methods Blood specimens from the neonatal department of a hospital between June 2012 and August 2014 were collected,blood specimens cultured between June 2012 and June 2013 were as control group (routine disinfection during blood collection process),and blood specimens cultured between August 2013 and Au-gust 2014 were as intervention group (improved disinfection method for skin and bottle caps),detection rates of CNS between two groups were compared.Results In control group,41 isolates of pathogens were isolated from 543 blood culture specimens,positive rate was 7.55%;in intervention group,21 isolates of pathogens were isolated from 853 blood culture specimens,positive rate was 2.46%.The detection rate of CNS in control group was 4.97%(n=27),12 (2.21 %)of which were methicillin-resistant coagulase-negative staphylococcus (MRCNS);the detec-tion rate of CNS in intervention group was 0.82%(n=7),6 (0.70%)of which were MRCNS.Difference in detec-tion rates of CNS and MRCNS between two groups were both statistically significant(χ2 =24.07,5.92,both P <0.05).Conclusion Improving disinfection methods for skin and caps of blood culture bottles during blood collection can decrease the detection rate of CNS.

Objective To investigate the current situation of animal injury among children in Chongqing, and to provide a scientific basis for relevant departments to formulate and implement strategies and measures to prevent and control animal injury to children. Methods According to the method of multi-stage stratified cluster sampling, 14,056 children in grades 4-12 in four districts of Chongqing were selected as the investigation subjects, and the occurrence of animal injuries in the past 6 months was investigated. Results The incidence of animal injury among school children in Chongqing was 0.35% and the incidence of person-time was 0.36%. The incidence rate in males (0.48%) was higher than that in females (0.31%). The incidence rate in urban children (0.43%) was higher than that in rural children (0.30%). The incidence of animal injury was the lowest in nuclear families (0.25%), and the highest in single-parent families (0.82%). There were statistically significant differences in the incidence of animal injuries in children among different fathers' occupational types, family types and parents' parenting styles (P<0.05).  The main place of child animal injury was home (57.14%). Recreational activities were the main cause of animal injury (51.02%). The main injuries were lower limbs (42.86%), upper limbs (24.49%) and head (10.20%). Conclusion The prevention and control of children's animal injury in Chongqing should focus on boys and families. It is suggested to take targeted and comprehensive interventions to prevent animal injuries in children.