Objective: To analyze the etiology of infections in the wounded victims of Wenchuan Earthquake.
Methods: 2135 smears of secretion were made from 1823 hospitalized wounded victims of Wenchuan Earthquake to detect the pathogens. Specimens were delivered to be cultured. The bacteria thus obtained were identified. Drug sensitivity test was conducted.
Results: 2002 specimens, 1243 specimens of secretion (62.1%), 600 blood specimens (30.0%), 102 specimens of pus or secretion of respiratory tract (5.1%), 45 specimens from catheter (2.2%), and 12 urine specimens (0.5%). Pathogens were found in 725 cases. The top five pathogenic bacteria isolated within 1 month after the quake were Acinetobacter baumannii (16.7%), Staphylococcus haemolyticus (16.7%), Escherichia coli (12.5%), Klebsiella pneumoniae (12.5%), and Candida tropicalis (8.3%), quite different from the pathogen spectrum of the common in-patients within one month before the quake: Escherichia coli (18.2%), Staphylococcus aureus (11.4%), Candida glabrata (11.4%), Klebsiella pneumoniae (11.4%) and Staphylococcus epidermidis (9.1%). The isolation rate of methicillin resistant Staphylococcus aureus after the earthquake was significantly lower, and the isolation rates of extended spectrum beta-lactamase-producing Escherichia coli, Klebsiella pneumoniae, and Klebsiella oxytoca were all significantly higher than those from the common surgical patients before the quake (all P < 0.05). There were not significant differences in the isolation rates of multi-drug resistant Pseudomonas alcaligenes and Acinetobacter baumannii before and after the quake.
Conclusion: Infection is frequent after natural disasters. It is necessary to summarize the changes of spectrum of pathogens and drug-resistant spectrum.
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