Really? I havent read anything about animal reservoirs. Are you speculating that they might exist? Not everyone needs to be vaccinated to eradicate a disease.

Really? I havent read anything about animal reservoirs. Are you speculating that they might exist? Not everyone needs to be vaccinated to eradicate a disease. A large fraction can go unvaccinated and as long as recirculation is slow enough the natural immunity will result in eradication even among that population.