Like polling, all the bullsh*t is hidden under the headlines.
(What criteria were used to establish infection? What is the infection rate (try a histogram by age) among the control group? — if both the vaccination group and control group, have a disproportionate share of youngsters not likely to get infected, or old people who are more susceptible?
What is the *distribution* of subsequent infections, not just the average, by age, in the control and vaccine group?
The earlier study, actually admitted using estimates and proxy data (due to the rapid spread of the c00f while it was being conducted).
Did the study control for those who had already acquired natural immunity?
etc. etc. etc.
Great points... grey.