[Observation on the effect of disinfection to HBsAg by electrolyzed oxidizing water].
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.


CONCLUSIONS
EOW was effective in destroying HBsAg which could be used for gastroscope disinfection.
Gao
Z
Z
Nosocomial Infection Department China-Japan Friendship Hospital, Beijing 100029, China.
Yin
W
W
Han
C
C
Zhang
J
J
Jin
W
W
Li
X
X
D004203:Disinfection / Q000379:methods*; D004572:Electrolysis; D004797:Enzyme-Linked Immunosorbent Assay; D004866:Equipment Contamination / Q000517:prevention & control*; D020699:Gastroscopes / Q000821:virology*; D006509:Hepatitis B / Q000517:prevention & control; D006514:Hepatitis B Surface Antigens / Q000032:analysis*; D006801:Humans; D010084:Oxidation-Reduction; D014867:Water / Q000737:chemistry*
D006514:Hepatitis B Surface Antigens; D014867:Water