evidence: Everything you need to know about the monkeypox vaccines [...] Monkeypox vaccines are already being deployed around the world, and news reports have described a "scramble" as countries desperately try to secure some of the limited number of available doses. There are concerns that poorer nations will go without. At the same time, there’s a lot we don’t know about how effective the vaccines are even likely to be. We spoke to vaccine manufacturers, virologists, and epidemiologists to get answers to the most urgent questions. [...] The WHO has called on nations that have the vaccine to share doses with those that don’t. Some scientists have pointed out that the monkeypox vaccines have not been made available to the African countries where the virus is endemic.