Only 3.8% of pregnant women have HSV-2

https://pubmed.ncbi.nlm.nih.gov/38399571/

Only 3.8% of pregnant women in Croatia have HSV-2. And pregnant women are much more likely to have HSV-2 than the general population.

I just don't understand how we got so unlucky. 70% had HSV-1 why is it so rare for type 2?