May 14, 2014 — Scientists are racing to figure out how the Middle East respiratory syndrome virus infects people. After surfacing in 2012, it has spread to the U.S. and other countries. Here's what we know so far.
Feb 25, 2014 — A new virus in the Middle East has sickened more than 180 people and killed an alarming 43 percent of them. But scientists haven't been sure where the virus originates or how people catch it.
Sep 20, 2013 — Since emerging last year in the Middle East, a mysterious virus has infected at least 132 people and killed 58. But it's still unknown how people get infected. A genetic analysis now suggests that animals may have repeatedly infected people with the deadly virus.
Sep 8, 2013 — Scientists offer a glimmer of hope that a treatment for humans with the deadly disease might be on the horizon. Two drugs commonly used to treat other viral infections reduced the symptoms of the Middle East respiratory syndrome in a small number of monkeys.
Aug 21, 2013 — Just a fragment of genes in bat guano was enough for researchers trying to find out how a deadly new virus spreads. It's the first time the Middle East respiratory syndrome virus has been found in an animal, and offers strong evidence that bats carry the virus.
Aug 9, 2013 — Scientists find the a tantalizing clue about where people may be catching the Middle East respiratory syndrome. Camels on the Arabian Peninsula and Canary Islands show signs that they've been infected with the virus or a close relative.
Jun 20, 2013 — Middle East Respiratory Syndrome emerged a year ago in Saudi Arabia, although the world didn't find out about it until September, when researchers said it was caused by a previously unknown virus that's in the same family as SARS.
Jun 3, 2013 — The World Health Organization says lab tests have confirmed the infections in a 2-year-old girl and a 42-year-old woman with the Middle East Respiratory Syndrome Coronavirus. Both patients are close contacts of someone who traveled to Jordan recently.
May 29, 2013 — All told, the fatality rate for confirmed infections with the virus has been more than 50 percent. But the true fatality rate won't be clear until the fuller extent of cases, some probably much milder, becomes known.
May 13, 2013 — SARS burst on the scene in 2003 after one man infected travelers staying on the same floor of a Hong Kong hotel. Now that a new virus with similarities to SARS has spread from person to person, public health officials are urging hospitals to be on guard.