Frequently Asked Questions and Answers
Q: What is MERS?
A: Middle East Respiratory Syndrome (MERS) is a viral respiratory illness. MERS is caused by a coronavirus called “Middle East Respiratory Syndrome Coronavirus” (MERS-CoV).
Q: What is MERS-CoV?
A: MERS-CoV is a beta coronavirus. It was first reported in 2012 in Saudi Arabia. MERS-CoV used to be called “novel coronavirus,” or “nCoV”. It is different from other coronaviruses that have been found in people before.
Q: How was the name selected?
A: The Coronavirus Study Group (CSG) of the International Committee on Taxonomy of Viruses (ICTV) decided in May 2013 to call the novel coronavirus “Middle East Respiratory Syndrome Coronavirus” (MERS-CoV) [5 pages].
Q: Is MERS-CoV the same as the SARS virus?
A: No. MERS-CoV is not the same coronavirus that caused severe acute respiratory syndrome (SARS) in 2003. However, like the SARS virus, MERS-CoV is most similar to coronaviruses found in bats. CDC is still learning about MERS.
Q: What are the symptoms of MERS?
A: Most people who got infected with MERS-CoV developed severe acute respiratory illness with symptoms of fever, cough, and shortness of breath. About 30% of them died. Some people were reported as having a mild respiratory illness. More about Symptoms & Complications.
Q: Does MERS-CoV spread from person to person?
Q: What is the source of MERS-CoV?
A: We don’t know for certain where the virus came from. However, it likely came from an animal source. In addition to humans, MERS-CoV has been found in camels in Qatar, Egypt and Saudi Arabia, and a bat in Saudi Arabia. Camels in a few other countries have also tested positive for antibodies to MERS-CoV, indicating they were previously infected with MERS-CoV or a closely related virus. However, we don’t know whether camels are the source of the virus. More information is needed to identify the possible role that camels, bats, and other animals may play in the transmission of MERS-CoV.
Q: Is CDC concerned?
A: Yes, CDC is concerned about MERS-CoV. Most people who have been confirmed to have MERS-CoV infection developed severe acute respiratory illness. They had fever, cough, and shortness of breath. About 30% of these people died. Also, in other countries, the virus has spread from person to person through close contact, such as caring for or living with an infected person. CDC recognizes the potential for the virus to spread further and cause more cases globally, including in the United States.
Q: Has anyone in the United States gotten infected?
A: Yes, on May 2, 2014, the first U.S. imported case of MERS was confirmed in a traveler from Saudi Arabia to the U.S. On May 11, 2014, a second U.S. imported case of MERS was confirmed in a traveler who also came from Saudi Arabia. The two U.S. cases are not linked. On May 16, 2014, an Illinois resident who had contact with the first case of MERS in the U.S. tested positive for MERS-CoV. More about MERS in the U.S.
Q: What is CDC doing about MERS?
A: CDC works 24/7 to protect people’s health. It is the job of CDC to be concerned and move quickly whenever there is a potential public health problem.
CDC continues to closely monitor the MERS situation globally. We are working with the World Health Organization and other partners to better understand the virus, how it spreads, the source, and risks to the public’s health.
We recognize the potential for MERS-CoV to spread further and cause more cases globally and in the United States. In preparation for this, we have
- Enhanced surveillance and laboratory testing capacity in states to detect cases
- Developed guidance and tools for health departments to conduct public health investigations
- Provided recommendations for healthcare infection control and other measures to prevent disease spread
- Provided guidance for flight crews, Emergency Medical Service (EMS) units at airports, and U.S. Customs and Border Protection (CPB) officers about reporting ill travelers to CDC
- Disseminated up-to-date information to the general public, international travelers, and public health partners
Q: Am I at risk for MERS-CoV infection in the United States?
A: The MERS situation in the U.S. represents a very low risk to the general public in this country.
Q: Can I still travel to countries in the Arabian Peninsula or neighboring countries where MERS cases have occurred?
A: Yes. CDC does not recommend that anyone change their travel plans because of MERS. The current CDC travel notice is an Alert (Level 2), which provides special precautions for travelers. Because spread of MERS has occurred in healthcare settings, the alert advises travelers going to countries in or near the Arabian Peninsula to provide health care services to practice CDC’s recommendations for infection control of confirmed or suspected cases and to monitor their health closely. Travelers who are going to the area for other reasons are advised to follow standard precautions, such as hand washing and avoiding contact with people who are ill.
For more information, see CDC’s travel notice on MERS in the Arabian Peninsula.
Q: What if I recently traveled to countries in the Arabian Peninsula or neighboring countries and got sick?
A: If you develop a fever and symptoms of respiratory illness, such as cough or shortness of breath, within 14 days after traveling from countries in the Arabian Peninsula or neighboring countries, you should see your healthcare provider and mention your recent travel.
Q: How can I help protect myself?
A: CDC routinely advises that people help protect themselves from respiratory illnesses by taking everyday preventive actions:
- Wash your hands often with soap and water for 20 seconds, and help young children do the same. If soap and water are not available, use an alcohol-based hand sanitizer.
- Cover your nose and mouth with a tissue when you cough or sneeze then throw the tissue in the trash.
- Avoid touching your eyes, nose, and mouth with unwashed hands.
- Avoid close contact, such as kissing, sharing cups, or sharing eating utensils, with sick people.
- Clean and disinfect frequently touched surfaces, such as toys and doorknobs.
Q: Is there a vaccine?
A: No, but CDC is discussing with partners the possibility of developing one.
Q: What are the treatments?
A: There are no specific treatments recommended for illnesses caused by MERS-CoV. Medical care is supportive and to help relieve symptoms.
Q: Is there a lab test?
A: Yes, there are two main ways to determine if a person is or has been infected with MERS-CoV. We can collect a respiratory sample and use a test called PCR to determine if a person has active infection with the virus. We can also do a blood test that looks for antibodies to MERS-CoV that would indicate a person had previously been infected with MERS-CoV.
Q: What should healthcare providers and health departments do?
A: For recommendations and guidance on the case definitions; infection control, including personal protective equipment guidance; home care and isolation; case investigation; and specimen collection and shipment, see Interim Guidance for Health Professionals.