infectious diseases
Varicella Vaccine
Contraindications and Precautions for Varicella Vaccine
Contraindicationsfor varicella vaccine include A severe allergic reaction (eg, Anaphylaxis ) after a previous dose of the vaccine or to a vaccine component Known severe Overview of Immunodeficiency Disorders (eg, due to leukemia, lymphomas, solid tumors, tumors that affect bone marrow or the lymphatic system, AIDS, severe HIV infection, treatment with chemotherapy, or long-term use of immunosuppressants) Unless people are known to be immunocompetent, family history of first-degree relatives who have congenital hereditary immunodeficiency Confirmed or suspected pregnancy The single-antigen varicella vaccine may be given to children aged 1 to 8 years who have HIV infection if their CD4 percentage is ≥ 15; it may be given to those > 8 years if their CD4 percentage is ≥ 15 and CD4 count is ≥ 200/mcL with no evidence of immunity. Precautionswith varicella vaccine include Moderate or severe acute illness with or without fever (vaccination is postponed until illness resolves) Recent (within 11 months) treatment with blood products that contain antibody (specific interval depends on the product) Use of specific antiviral drugs:acyclovir,famciclovir, orvalacyclovir(if possible, these drugs are stopped 24 hours before vaccination and are not resumed for 14 days after vaccination) Breastfeeding is not a contraindication to vaccination. Women who are breastfeeding and do not have evidence of immunity can be vaccinated postpartum and continue breastfeeding. 