🔺Pfizer’s trials show that natural immunity is 100% effective 🔺Decrease in white blood cells were observed after dose 1, (immune system attack) 🔺Adverse events were MORE SEVERE in the younger age group
Important POLIO Information: Adverse events following immunization with oral poliovirus in Kinshasa, Democratic Republic of Congo: preliminary results Didier Nzolo et al. Pathog Glob Health. 2013 Oct. N.I.H. Study