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 New Hacker's Dictionary(0.00 / 0 votes)Rate this definition: [from the German âklugâ, clever; poss. related to Polish & Russian âkluczâ (a key, a hint, a main point)] 1. n. A Rube Goldberg (or Heath Robinson) device, whether in hardware or software.