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With 614 cases reported around the globe — and three infections in the U.S. — Middle East respiratory syndrome has been making headlines lately. Also known as MERS-CoV, the coronavirus has been linked to 181 deaths and raised concerns among global health officials.

There is no vaccine or treatment for the disease, and its origins have not been definitively identified, though links with camels have been found.  Here’s a quick recap for the disease:

MERS is not yet considered to be an official international public health emergency by the World Health Organization, but is of significant concern. Most MERS cases have occurred in countries in the Arabian Peninsula, including Saudi Arabia, Qatar, Jordan, the United Arab Emirates, Oman, Yemen and Kuwait. However, the disease has now been reported in 19 countries, with the Netherlands joining the list this week. About a third of all MERS patients have died.

Read this story in full on APHA’s Storify page.