This was not the oral pill used in MS, but the variant injected into the skin.
Although cladribine does not typically cause very marked loss of lymphocytes, it happens in a very small number of individuals
• We report a case of lethal influenza A infection with severe lymphopenia in an MS patient receiving s.c. cladribine.
•Cladribine-related lymphopenia is usually mild to moderate, however severe lymphopenia may occur.
•Annual influenza immunisation should be recommended for people with MS, especially those who are immunosuppressed.
Sadly this person died, so please ensure you get your flu jabs before taking immunosuopress treatments.
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