1952. In one of the largest medical tests in history, nearly 2 million young “polio pioneers” were injected with the vaccine over the next two years. In 1953, Salk tested the still-experimental vaccine on himself and his wife and sons. ...
Most Americans learn as schoolchildren that Jonas Salk was the genius behindthe invention of the polio vaccine. But there would not have been a Salk vaccine without the work ofIsabel Morgan, a rese...
The DDT theory, like the lead arsenate observation, failed because it wrongly dismissed the equally important role of the virus itself. It could not account for the prompt collapse of polio in the U.S. after the vaccine was developed. The vaccine clearly eliminated outbre...
Hayes and Laws also used a secondary evaluation, DDT intake per day, to explain that from 1954 to 1964-67, DDT ingestion decreased by an approximate factor of five. Significantly, the Salk vaccine program began in 1954. The observed decrease in the concentration of DDT in food (Walker et a...
The present invention relates to (a) methods for improving a genetic stability of an insert nucleotide sequence in a recombinant single-stranded RNA virus vector, which comprises performing a mutagenesis of the foreign insert nucleotide sequence to provide even distribution of G/C content throughout ...
Iconography : India tackles vaccine preventable diseases S Bagcchi 被引量: 0发表: 0年 Coin Iconography and Social Practice in the Roman Republic Furthermore, the contribution tackles several key questions: Who was responsible for the choice of types on the different urban and imperatorial series,...
its invention in 1892 ushered in the Age of Polio. Arsenic can weaken the immune system and cause permeability in the GI tract and, we suspect, allow the virus to escape into the nerves and cause paraIysis. Lead, too, is infamous for causing both mental and physical handicaps including par...