Male circumcision provides a degree of protection against acquiring HIV infection, equivalent to what a vaccine of high efficacy would have achieved. Male circumcision may provide an important way of reducing the spread of HIV infection in sub-Saharan Africa.
I can see no hope at present of such a vaccine being produced... I have adopted a frankly defeatist attitude towards the problem of poliomyelitis and I hope that future developments will prove me wrong... No means of controlling poliomyelitis is at present visible.frank macfarlane burnet
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