While we can reduce gradually the reservoir of the virus in the population, complete eradication after vaccination programs will be on a time line that should be looked at by a generation, not by decades. Use polio as the example.....

For those really interested in all this I recommend that you read Polio, and American story, by David Oshinsky. (Please buy it through the OCF Amazon link and save money while helping OCF) This will give you a really good perspective on how vaccines are developed, the governmental issues associated with mass application of them, the side effects and adverse events, and ultimately the defeat of a killer disease over generations.