On Friday, a court said that vaccines containing preservative called thimerosal, could not have caused autism, but parents believed that vaccine is the main cause of illness in their children.

The special U. S. Court of Federal Claims revealed that they did not find any evidence that vaccines have caused autism in three cases.

The court ruling was against three families who believed that vaccines caused autism in their children in February 2009. The court said that they have been "misled by physicians who are guilty, in my view, of gross medical misjudgment”.

Around 5,300 cases have been registered by parents who blamed vaccines for the disorder in their children.

Autism is a disorder of neural development that affects around 110 U. S. children and there is no therapy to cure the disease.

The U. S. Institute of Medicine has revealed that there is no relationship between vaccines and autism.

"It's time to move forward and look for the real causes of autism. There is not a bottomless pit of money with which to fund autism science. We have to use our scarce resources wisely”, said Alison Singer, President of the Autism Science Foundation.