The FDA has licensed PreHevbrio (VBI Vaccines), a recombinant, 3-antigen, 3-dose hepatitis B vaccine, for the prevention of infection caused by all known subtypes of hepatitis B virus (HBV) in adults. It has been available in Israel since 2000.

About 2.5 million persons in the US had hepatitis C between 2017 and 2020. Guidelines from the American Association for the Study of Liver Diseases (AASLD) and the Infectious Diseases Society of America (IDSA) on management of hepatitis C virus (HCV) infection were updated in 2023.

The Advisory Committee on Immunization Practices (ACIP) recommends use of certain vaccines in adults residing in the US. Routine childhood immunization has reduced the overall incidence of some of these vaccine-preventable diseases, but many adults remain susceptible. Recommendations for vaccination against COVID-19, seasonal influenza, and monkeypox and vaccination of travelers have been reviewed separately.

Two recombinant vaccines, Arexvy (GSK) and Abrysvo (Pfizer), have been approved by the FDA for prevention of lower respiratory tract disease (LRTD) caused by respiratory syncytial virus (RSV) in adults ≥60 years old. They are the first RSV vaccines to be approved in the US. Abrysvo is also approved for use in pregnant women at 32-36 weeks' gestation to prevent LRTD caused by RSV in their infants from birth through 6 months of age.

Rheumatoid arthritis (RA) is prevalent in 0.5% of adults in the US; it is about 2.5 times more common in women than in men. Guidelines for treatment of RA from the American College of Rheumatology were recently updated. The goal of treatment is to minimize disease activity and prevent irreversible joint damage.

The FDA has approved a subcutaneous formulation of the recombinant human anti-CD20 antibody ofatumumab (Kesimpta – Novartis) for treatment of adults with relapsing forms of multiple sclerosis (MS), including clinically isolated syndrome (initial neurological episode), relapsing-remitting disease, and active secondary progressive MS (SPMS). Kesimpta is the second anti-CD20 antibody to be approved for these indications; IV ocrelizumab (Ocrevus), which is also approved for treatment of primary progressive MS, was the first. An IV formulation of ofatumumab (Arzerra) has...

The FDA has approved the recombinant chimeric anti-CD20 antibody ublituximab-xiiy (Briumvi – TG Therapeutics) for IV treatment of adults with relapsing forms of multiple sclerosis (MS), including clinically isolated syndrome (initial neurological episode), relapsing-remitting disease, and active secondary progressive MS (SPMS). Two other anti-CD20 antibodies, IV ocrelizumab (Ocrevus) and SC ofatumumab (Kesimpta), are also FDA-approved for these indications.

Most patients with multiple sclerosis (MS) present with the relapsing-remitting form of the disease. Pharmacologic treatment usually includes a disease-modifying drug, corticosteroids for acute exacerbations, and other drugs for managing symptoms such as fatigue, depression, and pain. Early use of disease-modifying therapy has improved clinical outcomes.

The FDA has approved the complement factor B inhibitor iptacopan (Fabhalta – Novartis) for treatment of paroxysmal nocturnal hemoglobinuria (PNH) in adults. Iptacopan is the first oral drug to be approved in the US for this indication. Three parenterally administered drugs, the complement C5 inhibitors eculizumab (Soliris) and ravulizumab (Ultomiris) and the complement C3 inhibitor pegcetacoplan (Empaveli), are also approved for treatment of PNH.