Inactivation of Hepatitis a Virus by Heat and Formaldehyde
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The GBM strain of hepatitis A virus adapted to a fetal rhesus monkey kidney cell line (Frhk-4/R) was treated and inactivated at several different temperatures and with several different formaldehyde concentrations. Heat inactivation showed that no inactivation occurred after treatment for 60 minutes at 37°C. Treatment for 60 minutes at 50°C reduced infectivity by 1 log 10 step ; treatment for 60 minutes at 60°C, by 4 log 10 steps. Treatment for 30 minutes at 70°C resulted in complete inactivation of HAV. Complete inactivation by formaldehyde treatment was achieved only with a 0.35% concentration. Treatment with lower concentrations resulted in incomplete HAV inactivation.
1980 ◽
Vol 168
(4)
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pp. 239-248
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1986 ◽
Vol 23
(3)
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pp. 434-440
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2011 ◽
Vol 3
(1)
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pp. 31-34
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2009 ◽
Vol 16
(3)
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pp. 214-218
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1987 ◽
Vol 98
(3)
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pp. 397-414
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2004 ◽
Vol 9
(1)
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pp. 65-68
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