It is a good article but also has a self selection bias. Those more likely to disclose are more likely to participate. Further it is based on North America culture and this differs markedly with different cultures.
The universal issue though is one of knowledge that you actually carry the virus. This exceeds 80% who don't disclose. The survey only pertains to the 20% subset.
I'd suggest internationally that 95-98% of people with HSV-2 do not disclose for a variety of reasons.