A GP who faked blood test results has been jailed for nine months.
David Pugh faked the results to allay parents' fears about the effectiveness of separate measles, mumps and rubella inoculations that his clinic gave to children.
Pugh, 55, had admitted faking four test results at the private clinic he ran near Borehamwood, Hertfordshire, in February, 2003.
The sentence was welcomed by a Huddersfield mother whose young son had immunisations from Pugh.
Mrs Alison Wilson, of Waterloo, said Pugh deserved to be jailed.
Pugh pleaded guilty to four counts of forgery at a hearing at Cambridge Crown Court in November. Sentencing had been adjourned until yesterday.
Pugh, a GP for 31 years, comes from Hoddesdon, Hertfordshire, but in recent months has been living in Runaway Bay, Queensland, Australia.
Thousands of families concerned at reports that autism could be linked to the controversial all-in-one measles, mumps and rubella (MMR) jab paid £70 to have separate inoculations for their children at Pugh's Elstree Aerodrome clinic, the court was told.
Pugh also ran a clinic in Sheffield - and the Wilsons were victims.
Little Oliver Wilson had to have other jabs after fears that the ones given by Pugh had not worked.
Mrs Wilson said today: "He deserves what he has got. Nine months doesn't seem that much, considering what he has admitted.
"It is appalling he did this. You put your trust in these people."
Pugh's practice treated about 250 children a week and had a weekly turnover of around £17,500 at the height of the autism scare in 2002.
But parents flooded the clinic with calls 18 months ago after reports that inoculations given at the clinic might not be effective because of the way they were being prepared and stored.
Pugh offered free blood tests to parents in an attempt to prove whether or not children were inoculated.
He then changed blood test results which showed children had not been properly inoculated.
Mrs Wilson and her husband, John, spoke out in 2003 over their fears that Oliver may not have been protected by the jabs. He had gone for a measles jab at the clinic in July, 2002, and a rubella vaccination in October of that year.
His parents wanted him to have separate jabs after hearing how the triple MMR vaccination had been linked to autism and the bowel disorder Crohn's disease in toddlers.
Oliver later had to have blood tests to make sure everything was all right.