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Antivirals or antibiotics should be taken at regular intervals to maintain adequate levels of drug in the blood to achieve efficient elimination of organism.However in PEP a variation of one or two hours doesnt effect the treatment to much an extent but it is not avisable to do so. Try to have the tablets regularly and as prescribed.
Regarding spread of HIV
, the chances of spread when semen touches vagina are there.The risk raises with direct contact because there could be minor cuts in the skin and thus there is a chance of viral transmission.
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