The World Health Organization has declared the monkeypox outbreak a public health emergency of international concern. WHO Director-General Tedros Adhanom Ghebreyesus made the announcement Saturday morning.

Tedros Adhanom Ghebreyesus: “There are now more than 16,000 reported cases from 75 countries and territories, and five deaths. … WHO’s assessment is that the risk of monkeypox is moderate globally and in all regions, except in the European region, where we assess the risk is high.”

Monkeypox is rarely fatal but can cause fever, rashes and extremely painful lesions. It’s most often spread through close, intimate physical contact.