Amendments are sent to the legislatures of the  states by default. Only one amendment, the 21st, specified a  convention. In any case, passage by the legislature or convention  is by simple majority.
Yes, there is a MMRV VIS, as well as a MMR VIS and a Varicella VIS. The law requires that a Vaccine Information Statement (VIS) be given out whenever certain vaccinations are administered, including MMR, varicella or MMRV vaccines.hen the first dose of measles, mumps, rubella, and varicella vaccines is administered at ages 48 months and older, use of MMRV vaccine generally is preferred over separate injections of MMR and varicella vaccines.
An inactivated vaccine can be administered either simultaneously or at. any time before or after a different inactivated or live vaccine. A live vaccine can be given. either simultaneously or at any time before or after an inactivated vaccine. Spacing of Vaccines and Antibody-Containing Products. Blood and other antibody containing blood products can inhibit the immune response to measles.