5 developed the disease 7 or 8 days after the vaccination. Not sure what you're getting at...sampling error? It's a binomial distribution, right? Back of the fa

5 developed the disease 7 or 8 days after the vaccination. Not sure what you're getting at...sampling error? It's a binomial distribution, right? Back of the fag packet maths, we can easily reject 1 in a million, and put a reasonable upper bound below 1 in 100,000.