RabAvert (Chiron), a new human rabies vaccine prepared in purified chick embryo cell culture (PCEC), has been marketed in the USA for pre- and post-exposure prophylaxis. It is available in other countries as Rabipur. Human rabies is rare in the United States, but thousands of people receive post-exposure prophylaxis every year (DL Noah et al, Ann Intern Med, 128:922, June 1, 1998).

In the past 2 years, the FDA has approved 3 new drugs for prevention or treatment of hereditary angioedema (HAE) in non-pregnant adolescents and adults: the C1 esterase inhibitor Cinryze for prophylaxis and the C1 esterase inhibitor Berinert and the kallikrein inhibitor ecallantide (Kalbitor) for treatment of acute attacks.

Influenza is generally a self-limited illness, but complications including pneumonia, respiratory failure, and death can occur, especially in persons at increased risk (see Table 1).

Donidalorsen (Dawnzera – Ionis), a subcutaneously injected prekallikrein-directed antisense oligonucleotide, has been approved by the FDA for prevention of hereditary angioedema (HAE) attacks in patients ≥12 years old. It is the first RNA-targeted drug to be approved in the US for this indication.

On July 10, 2025 Pfizer issued a voluntary recall of certain lots of long-acting intramuscular (IM) benzathine penicillin G (Bicillin L-A) due to particulates identified during visual inspection. The CDC has issued a "Dear Colleague Letter" to alert healthcare providers about the recall and provide advice on how to manage the potentially limited supply of the drug for treatment of syphilis, which has been increasing in the US.2 Benzathine penicillin G is also used for treatment of group A streptococcal pharyngitis and prophylaxis of rheumatic fever.

Fidanacogene elaparvovec-dzkt (Beqvez – Pfizer), an adeno-associated virus (AAV) vector-based gene therapy, has been approved by the FDA for treatment of adults with moderate to severe hemophilia B who do not have neutralizing antibodies to AAV serotype Rh74var and currently receive factor IX prophylaxis therapy or have had life-threatening hemorrhage or repeated, serious, spontaneous bleeding episodes. Beqvez is the second single-dose gene therapy to be approved in the US for treatment of hemophilia B; Hemgenix was the first.

Onychomycosis is caused most commonly by Trichophyton rubrum or T. mentagrophytes. About 10% of all persons worldwide and 40% of those ≥60 years old are believed to have the disease. Risk factors include older age, diabetes, poor peripheral circulation, smoking, HIV infection, psoriasis, and immunosuppression. Left untreated, onychomycosis can cause nail plate destruction, ingrown nails, and (particularly in patients with diabetes) secondary infections. Guidelines on treatment of onychomycosis have been published.

Anticoagulants are the drugs of choice for treatment and prevention of deep venous thrombosis (DVT) and pulmonary embolism (PE), collectively referred to as venous thromboembolism (VTE). US guidelines for treatment of VTE were updated in 2020 and 2021.

Micafungin sodium (Mycamine - Astellas), the second echinocandin antifungal to become available in the US, has been approved by the FDA for intravenous treatment of esophageal candidiasis and prophylaxis of invasive Candida infections in patients undergoing hematopoietic stem cell transplantation (HSCT).

Berotralstat (Orladeyo – Biocryst), an oral plasma kallikrein inhibitor, has been approved by the FDA for prevention of hereditary angioedema (HAE) attacks in adults and children ≥12 years old. The subcutaneously-injected plasma kallikrein inhibitor lanadelumab-flyo (Takhzyro) and the human plasma-derived C1 esterase inhibitors (C1INHs) Cinryze, which is given IV, and Haegarda, which is given SC, have been available for prophylaxis of HAE for years.