> There was only one case ever in any vaccine or trial of a side effect showing up after 6 weeks That is not true: https://www.cdc.gov/vaccines/vpd-vac/rotavir

> There was only one case ever in any vaccine or trial of a side effect showing up after 6 weeks That is not true: https://www.cdc.gov/vaccines/vpd-vac/rotavirus/vac-rotashield-historical.htm https://www.cdc.gov/vaccines/vpd-vac/rotavirus/vac-rotashiel... It was approved August 1998 and removed from market October 1999 - more than a year later. Edit: Oh, I see what you are saying - the intussusception happened within 2 weeks of receiving the vaccine. But that's not really comforting, if it took more than a year to understand that it was linked to the vaccination.