Japan: Why Japan banned MMR vaccine
The triple jab was banned in Japan in 1993 after 1.8 million children had been given two types of MMR and a record number developed non-viral meningitis and other adverse reactions.
Official figures show there were three deaths while eight children were left with permanent handicaps ranging from damaged hearing and blindness to loss of control of limbs.
The government reconsidered using MMR in 1999 but decided it was safer to keep the ban and continue using individual vaccines for measles, mumps and rubella.
https://www.vaccineconfidence.org/latest-news/japan-why-japan-banned-mmr-vaccine