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 herpes zoster (shingles) vaccine (Zostavax) is a stronger version of the chickenpox vaccine. It was originally approved in 2006 for adults age 60 years and older. In 2011, the FDA lowered the recommended age for Zostavax to 50. Varicella, or chickenpox, develops after an individual is exposed to VZV for the first time. 2  Herpes zoster, or shingles, develops from reactivation of the virus later in life, usually many decades after chickenpox.