What type of immunity does a child gain from receiving varicella zoster immune globulin (VariZIG)?

The child receives passive immunity from varicella zoster immune globulin (VariZIG). Passive immunity occurs when antibodies are transferred to a person from another source, rather than being produced by the individual's immune system in response to an infection or vaccination. In the case of VariZIG, antibodies are given to provide immediate protection against varicella (chickenpox) for individuals who have been exposed to the virus or are at high risk of complications from the disease.

Active immunity, on the other hand, develops when the body’s own immune system responds to an infection or vaccine by producing its own antibodies. Temporary immunity refers to the brief duration of some types of immunity, but that may not fully capture the concept for this question. Cell-mediated immunity specifically involves T-cells and is not directly relevant to the passive transfer of antibodies like in the case of VariZIG. Therefore, the correct answer highlights the mechanism by which immunity is provided through the direct introduction of antibodies into the child's system.