The explosion in autism has been caused by the introduction of human fetal cell lines in the manufacture of MMR (measles-mumps-rubella) vaccines, a major new study has concluded.
Before 1987, when the vaccines were produced with animal cell lines, autism cases were relatively low. Today, it's been estimated that 1 in 50 children has autism.
Stem cell researcher Theresa Deisher and others say that the correlation between the sudden explosion in autism cases and the introduction of the new MMR vaccines is too strong to ignore-although, as the old maxim goes, correlation doesn't prove causation.
The 'change point'-when the numbers of autism cases rose sharply-happened in the UK in 1987, just when the new MMR vaccine, using human fetal cells, was introduced. A similar correlation was seen around the same time in Denmark, while the autism change point in the US was 1980 to 1981 after the introduction of the new MeruvaxII and MMRII vaccines in 1979. Both vaccines used human fetal cells for the first time.
(Source: Journal of Public health and Epidemiology, 2014; 6: 271-86)