I think it's a misconception we have in the US that polio is "disease from the 50's that's been eliminated". I know personally, I was surprised just last week

I think it's a misconception we have in the US that polio is "disease from the 50's that's been eliminated". I know personally, I was surprised just last week when I went to my travel clinic, told them of an upcoming trip to Israel, and they recommended a polio booster. There's currently polio virus found in sewage in a modern country. Though no one has been found to have the disease in Israel, it's because of their high inoculation rate. In Syria, without inoculations, they are seeing an outbreak. Health organizers worry that the virus will spread around, by healthy people, who visit the region. Just shows how hard it is to completely eradicate a disease. Also, the book Polio was a fascinating read about the history of the disease and vaccine.