Letter obtained by CNN shows US authorities defended new monkeypox vaccine strategy to vaccine maker

The US Food and Drug Administration defended the federal government's recent decision to stretch out its limited supply of the Jynneos monkeypox vaccine by giving individuals smaller doses using a different method of injection, pointing out in a letter to the company that manufactures the vaccine that a 2015 clinical study showed "a very similar immune response" to the new method as well as the previously used one.