Head Lice From Doctor's Waiting Room

I had an appointment at a doctor's office, and found a seat butted up against some kids and their mom.  The chairs were butted up against each other, back to back, and didn't think a thing about it.  When I got home after a little bit, I kept feeling something crawling across my forehead and thought it was hair just out of place.  But it came more intense.  I went to a magnifying mirror to look, and I saw something go across my forehead at a faster pace.  I remembered sitting behind the kids and thought about head lice, as I have never had it before.  On the internet, it stated that head lice are fast moving, but I always thought they were slow.  I panicked thinking that I would infect the entire house.  

I remember my vet telling me that Ivermectin was used in 3rd world countries on people where parasites were really bad.  I went to the closet where I keep the wormer and poured some in my hands and rubbed it on both arms.  It did not take long for the itching to go away and there were no more head lice.  

When worming cattle, I have had the Ivermectin to splash back on me, or get it on my hands, but I never had any kind of problem with it.  So I felt I was safe to de-louse myself with it.  It sure made me feel nasty when I realized what I had.  All I knew was that I wanted to get rid of them immediately.