MMR vaccine, Japan 1989-1993
| Date | Incidence | Government comments | 
| 19/9/1989 | 1/100,000-200,000 | safe | 
| 25/10/1989 | 1/30,000 | use carefully | 
| 20/12/1989 | 1/a few thousand | only if parents want | 
| 31/05/1991 | 1/1200 | need parent's consent | 
| 30/4/1993 | MMR shots cease | 
| Naples Conference--"Compulsory Vaccination" (may 1997) from the speech of Hidehiko Yamamoto, Japanese Paediatrician (AVN Measles vaccination booklet) |