U.S., European Union and British regulators have backed changing the way the vaccine is administered by injecting a smaller amount of the shot intradermally, which increases by fivefold the doses that can be used from one vial.
In addition to the vaccine supply crunch, given the time it takes to deploy the vaccine and for it to take effect, the significant factors behind the slowdown appear to be earlier detection, which leads to patients isolating themselves sooner, and behavioural changes, Catherine Smallwood, senior emergency officer and monkeypox incident manager at WHO/Europe said in a press briefing.
"We do have some pretty good anecdotal evidence that people - particularly men who have sex with men who are in particular risk groups - are much more informed about the disease." More than 47,600 confirmed cases in 90 countries where monkeypox is not endemic have been reported since early May. The WHO has declared the outbreak a global health emergency.