date:Jul 19, 2012
id it was soon after the European vaccine was introduced that two new types of ILT virus were found. The new strains were thought to be the cause of the majority of the outbreaks in New South Wales and Victoria, which resulted in the research.
Research has also shown that the new strain of virus is a combination of the original and European vaccine strains and Lee believed the new strains causedmore severe diseaseand could replicate to a higher level than the parent vaccine strains that gave ri