HVP can be easily done away with with a simple dr administered swab. when my sister & I walkede out of the dr's office our mother had taken us there to get our 3rd polio vaccine, there had not been a case of polio in that area for 15 years. I got pertussus, I was less that 3 years old, I slept in a room with a diffuser while I was sick. what was in it? I forget, the net would probably say.