Comment: Pertussus too.

(See in situ)

Pertussus too.

The epidemiology of the recept Pert. outbreaks in the southwest US show that the DtaP vaccine not only did NOT prevent infection in those vaccinated who contracted the disease, but actually created an INVERSE to the herd immunity effect: because the P in DtaP was so weak it FOSTERED the growth and spread of the Pertussus rather than hindering it.