Only after realising that routine immunisations were dangerous did I achieve a substantial drop in infant death rates. The worst vaccine of all is the whooping cough vaccine... it is responsible for a lot of deaths and for a lot of infants suffering irreversible brain damage. In susceptible infants, it knocks their immune systems about, leading to irreparable brain damage, or severe attacks or even deaths from diseases like pneumonia or gastro-enteritis and so on.