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.
The common grackle is a common and often urban blackbird of eastern North America. Polytypic. Length 12.6 (32 cm). Identification A large blackbird with strong legs and a long, graduated tail that is held in a deep keeled shape during the breeding season.idespread form shows bronze gloss to body, blue head, and purple or blue iridescence on wings and tail. The iridescence of the head is different from that of the body, and changes abruptly; this applies to all forms of common grackle. Eyes are bright yellow, while legs and bill are black.