UKHSA is doing a study to try to map out immunity to #mpox. It had been assumed mpox was a one-and-done type of infection, but there have been a few reports of what looks like repeat infections, like this recent paper in Lancet. https://www.thelancet.com/action/showPdf?pii=S1473-3099%2823%2900185-8 and https://www.gov.uk/government/news/study-launched-to-find-out-more-about-mpox-immunity
Study launched to find out more about mpox immunity
A new study aims to better understand how the body reacts to the mpox virus and produces antibodies.UK Health Security Agency (GOV.UK)