Recently in the United States, infant cases of the respiratory syncytial virus (RSV) have been an increasing issue, particularly in the past year (per AstraZeneca). Fortunately, the United States Food and Drug Administration (FDA) has accepted a biologics license application for the drug nirsevimab, which is a single-dose antibody preventative for infants with lower respiratory tract infections brought on by RSV. The FDA plans on making its decision sometime between July and September of this year.

AstraZeneca and Sanofi developed the new drug and will expedite the process with the hopes that the drug will be available toward the end of the year. Notably, a 2022 study published in The New England Journal of Medicine found that only 1.2% of infants, who took nirsevimab, needed medical attention for RSV-related lower respiratory tract infections, whereas 5% of infants had RSV-related lower respiratory tract infection in the placebo group. Therefore, researchers concluded that nirsevimab has an efficacy of nearly 75%.

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