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[Observation on the effect of disinfection to HBsAg by electrolyzed oxidizing water]
1Nosocomial Infection Department China-Japan Friendship Hospital, Beijing 100029, China.
Objective:
Observation on the effect of disinfection on gastroscope, contaminated by hepatitis B surface antigen (HBsAg) in the electrolyzed oxidizing water (EOW).
Methods:
Contaminated gastric juice and serum was added to EOW for 1 minute. Positive control samples were treated with PBS instead of EOW in the same way. Gastroscopes used for hepatitis patients were immersed in the EOW for 1 minute after cleaning. Samples were collected before and after treatment. ELISA was used to test HBsAg.
Results:
With mixed samples (average S/N = 42.16) of EOW, HBsAg became negative when diluted in 100 times. However, the HBsAg of positive control samples remained positive. After cleaning the gastroscope (average S/N = 5.99) immersed in EOW, HBsAg became negative.
Conclusion:
EOW was effective in destroying HBsAg which could be used for gastroscope disinfection.
