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.
Children who have never had chickenpox should get two doses of chickenpox vaccine, with the 1st dose administered at 12 â 15 months of age and the 2 nd at 4-6 years of age. Two doses, administered 4-8 weeks apart, are also recommended for people 13 years of age or older. Non-immune persons who have been exposed to chickenpox should receive varicella vaccine to prevent or diminish the severity of illness. The vaccine is most effective if given within 3 days (72 hours) to 5 days (120 hours) of the exposure.