Alvorlige og sommetider fatale virale infectioner (f. eks. adenovirus, parainfluenza, hepatitis B, progressiv multifokal leukoencephalopati (PML)), bakterielle infectioner (herunder tuberkulose og atypiske mykobakterier, nokardiose) protozo - (f. eks. toxoplasma gondii) og svampeinfektioner (f. eks. rinocerebral mucormycose), herunder dem der skyldes reaktivering af latente infektioner, er forekommet under post- marketing overvågning.
Serious and sometimes fatal viral (e. g. adenovirus, parainfluenza, hepatitis B, progressive multifocal leukoencephalopathy (PML)), bacterial (including tuberculosis and atypical mycobacterioses, nocardiosis), protozoan (e. g. toxoplasma gondii), and fungal (e. g. rhinocerebral mucormycosis) infections, including those due to reactivation of latent infections have occurred during post-marketing surveillance.