So we blame the non-immune child rather than the non-immune mother Catherina?
The reason the second MMR was introduced after a couple of babies were born blind because their older sibling had rubella.
Now being told they need a further booster
As I said on the other thread, not all single vaccines were effective, due to problems with imports and some unscrupulous people jumping on the band wagon.
The government/NHS do not know how many children are only partially immunised. If they have had MMR x 2 then there is a 95% chance they are immune, with one MMR it's 90% with singles it could be anything.
There is no (or rarely) an NHS record for the singles.
Bumbly from debating with you on here I'm sure you researched the clinic/Dr well.
But the government and the NHS are in a position of not knowing how many people are immune.
They could do a blood test on every child who had singles and if they need a booster give MMR, or just give MMR to everyone who has not had 2 doses. There is no evidence that an extra MMR does any harm other than the usual temperature etc you might get from the first MMR.