The phagocytic cells of the immune system include macrophages, neutrophils, and dendritic cells. Phagocytosis of the hostsâ own cells is common as part of regular tissue development and maintenance.hese are immune cells that engulf, i.e. phagocytose, pathogens or particles. To engulf a particle or pathogen, a phagocyte extends portions of its plasma membrane, wrapping the membrane around the particle until it is enveloped (i.e. the particle is now inside the cell).
ACIP recommends that all children receive 2 doses of varicella vaccine routinely. The first dose should be given at age 12 through 15 months and the second dose at age 4 through 6 years.
The Food and Drug Administration has approved the use of the varicella-zoster vaccine (Zostavax) for adults age 50 and older, whether they've already had shingles or not. Although the vaccine is approved for people age 50 and older, the Centers for Disease Control and Prevention isn't recommending it until you reach age 60 or older, when the risk of shingles and its complications is highest.