• drug distribution will only be possible after checking that the patient has effectively received a meningococcal vaccination with a written confirmation • prior to distribution, all health care professionals are provided with information on the following key safety concerns: o Headache o Infusion reaction o Neisseria and general infection o Risk of serious haemolysis following eculizumab discontinuation and proposed management o Pregnancy and need of adequate contraception in women of childbearing potential o Immunogenicity o Renal and hepatic impairment.