Yes. Adalimumab is a potent anti-inflammatory drug that blocks the activity of tumor necrosis factor (TNF). Adalimumab is considered immunosuppressive because serious infections have been reported in people taking the drug, including tuberculosis and infections caused by viruses, fungi, or bacteria. A person taking adalimumab or other drugs that affect TNF activity (such as infliximab [Remicade], certolizumab pegol [Cimzia], golimumab [Simponi], or etanercept [Enbrel]) should be considered to have immunosuppression and receive either PCV20 alone or a 2-dose series of PCV15 followed by PPSV23. Clinicians can consider giving PPSV23 as soon as 8 weeks after PCV15 in this case, in order to accelerate protection against strains of pneumococcus unique to PPSV23.