For Discussion - Vaccines, pt. 2
From the CDC's Polio Disease In-Short page: " Up to 95% of persons infected with polio will have no symptoms. About four to eight percent of infected persons have minor symptoms such as fever, fatigue, nausea, headache, flu-like symptoms, stiffness in the neck and back, and pain in the limbs which often resolves completely. Fewer than one percent of polio cases result in permanent paralysis of the limbs (usually the legs). Of those paralyzed, 5-10% die when the paralysis strikes the respiratory muscles. " and from their Polio Disease - Questions and Answers page: " A vaccine-derived poliovirus (VDPV) is a strain of polio virus, initially contained in the live OPV, that has changed over time and behaves more like a wild or naturally-occurring virus. This means it can be more easily spread to others who are unvaccinated against polio and who come in contact with the stool or oral secretions (e.g. saliva) of an infected person. These viruses may cause illness, incl...