The reality is that up to 85% of the population has ALREADY been exposed to either HSV1 or HSV2. That means that already have the virus in their body - regardless of symptoms.
This comes from years and years of people thinking that cold sores are "not a big deal" (let me tell you - as someone who has cold sores, they are a VERY big deal)
You CAN avoid transmission. I have it - my husband has never had an outbreak - but we assume he has the antibodies.
How to prevent HSV transmission.