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What are the chances of transmitting male to female with brief non penetrative contact, maybe 5 seconds, before protected sex not during a breakout?
Low, but possible. Asymptomatic shedding is about 5 days/month for hsv2 and 1/30 for hsv2. So, maybe a 3.33--16.67% chance. That goes even lower if the other person has ever been exposed to hsv and already has some antibodies to fight off an infection.