3 ms·
> Do we have studies for this that compare two controlled groups in same environment? are you questioning the link between vaccines and polio almost entirely d
by exe34 2y ago
> Do we have studies for this that compare two controlled groups in same environment?
are you questioning the link between vaccines and polio almost entirely disappearing from all but about 4 countries on the planet?
what alternative "theory" do you have in this case?