The Advisory Committee on Immunization Practices (ACIP) recommends a two-dose vaccine schedule for measles, mumps, rubella and varicella vaccines for children, with the first dose at age 12-15 months and the second at age 4-6 years.accines and Immunizations. ShareCompartir. For the first dose of measles, mumps, rubella, and varicella vaccines at age 12-47 months, either MMR vaccine and varicella vaccine or MMRV vaccine may be used.
grackle. 1  any of several long-tailed American birds of the family Icteridae, especially of the genus Quiscalus, having usually iridescent black plumage. 2  any of several Old World birds of the family Sturnidae, especially certain mynas.
Grackle is the common name of any of eleven passerine birds native to North and South America. They belong to various genera in the icterid family.In all the species with this name, adult males have black or mostly black plumage. 1  Genus Quiscalus. 2  Boat-tailed grackle, Quiscalus major.ometimes members of the starling family have historically been called grackles. Tristram's starling is sometimes known as Tristram's grackle, and the hill mynas in the genus Gracula have also been called grackles.