The World Health Organization does not believe the monkeypox outbreak outside of Africa requires mass vaccinations as measures like good hygiene and safe sexual behaviour will help control its spread, quoting a senior official Reuters reported.

Richard Pebody, who leads the high-threat pathogen team at WHO Europe, also told Reuters in an interview that immediate supplies of vaccines and antivirals are relatively limited.

His comments came as the U.S. Centers for Disease Control and Prevention said it was in the process of releasing some Jynneos vaccine doses for use in monkeypox cases.

Germany’s government said on Monday that it was assessing options for vaccinations, while Britain has offered them to some healthcare workers.