Is the monkeypox vaccine safe and effective for teenagers?

As monkeypox outbreaks continue to pose a public health threat, a key question remains: should teenagers be included in vaccination plans? A new study is trying to answer that by testing the standard JYNNEOS vaccine in adolescents for the first time. The research involved about 450 healthy people who had never received a smallpox or monkeypox vaccine before. About 315 were teenagers between 12 and 17, and the rest were adults aged 18 to 50. The adults served as a comparison group, as the vaccine is already licensed for their use. All participants received the standard two-dose regimen of the vaccine, given a month apart. The main goal was to see if the vaccine triggers a similar immune response in teens as it does in adults and to carefully track any side effects they experience. It's important to know that this is an early, Phase 2 study. It was open-label, meaning everyone knew they were getting the vaccine, and it didn't use a placebo group for comparison. The specific results on how well the vaccine worked and how safe it was for the teens are not yet available from this data. This research is a necessary first step to gather evidence before any decisions can be made about offering this vaccine to younger people.