The CDC and its Advisory Committee on Immunization Practices (ACIP) now recommend that all adolescents aged 11-18 get vaccinated against meningococcal disease. That's not a radical change from the CDC's old meningitis vaccination schedule. In the past, vaccination of adolescents and young adults was recommended to coincide with specific ages or events, the CDC's Tom Clark, MD, said at a news conference today.
Cool Facts. 1  American Crows congregate in large numbers in winter to sleep in communal roosts. 2  Young American Crows do not breed until they are at least two years old, and most do not breed until they are four or more. 3  In some areas, the American Crow has a double life.
In many areas the fox is able to mate all year long. However, due to the vegetation and the temperatures they mainly do so in the early winter months. The males stick around to help the female out with the young. The gestation period is about 53 days.There are usually 4 or 5 young born at a time with each litter.n many areas the fox is able to mate all year long. However, due to the vegetation and the temperatures they mainly do so in the early winter months. The males stick around to help the female out with the young. The gestation period is about 53 days.