Do not administer intravascularly, intradermally or SC. Postpone vaccination in patients w/ acute severe febrile illness. Syncope. Patients w/ thrombocytopenia or any coagulation disorder. May not elicit adequate immune response in patients receiving immunosuppressive treatment or w/ immunodeficiency. Increased risk for invasive disease caused by
Neisseria meningitidis groups A, C, W-135, & Y even if Abs were developed following vaccination in patients w/ certain complement deficiencies & those receiving treatment that inhibits terminal complement activation (eg, eculizumab). Patients w/ increased susceptibility to meningococcal infection due to anatomic or functional asplenia (eg, sickle cell disease). Do not have protection against other
Neisseria meningitidis groups. Not all vaccinees may elicit a protective immune response. Consider administering a 2nd primary dose after an interval of 2 mth if an infant (6-<12 mth) or toddler (12-14 mth) is expected to be at immediate risk of invasive meningococcal disease due to exposure to groups W-135 &/or Y. Consider administering a booster dose if an individual is expected to be at particular risk of exposure to group A & received dose approx >1 yr previously; in individuals remaining at high risk of exposure to meningococcal disease caused by groups A, C, W-135, & Y. Not a substitute for tetanus immunization. Pregnancy & lactation.