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.
A second dose of the varicella vaccine should help to improve protection, decrease varicella cases by 22%1, which in turn will reduce the number of children who suffer complications from chickenpox. Two doses of the varicella vaccine are now recommended as part of the childhood schedule where, previously, only one dose was recommended.