Middle East Respiratory Syndrome (MERS)

Symptoms

Common signs and symptoms of Middle East Respiratory Syndrome (MERS) include:

High fever that develops suddenly

Severe dry cough that worsens over time

Extreme shortness of breath during normal activities

Sharp chest pain that gets worse with breathing

Overwhelming fatigue and weakness

Muscle aches throughout the body

Chills and sweating episodes

Headache and dizziness

Nausea and vomiting

Diarrhea and stomach cramps

Sore throat and runny nose

Confusion or altered mental state in severe cases

When to see a doctor

If you experience severe or worsening symptoms, seek immediate medical attention. Always consult with a healthcare professional for proper diagnosis and treatment.

Causes & Risk Factors

Several factors can contribute to Middle East Respiratory Syndrome (MERS).

MERS develops when a person becomes infected with the Middle East Respiratory Syndrome coronavirus, known scientifically as MERS-CoV.

MERS develops when a person becomes infected with the Middle East Respiratory Syndrome coronavirus, known scientifically as MERS-CoV. This virus belongs to the same family as the common cold virus and the coronavirus that causes COVID-19, but it behaves much more aggressively in the human body. The virus primarily attacks cells in the respiratory system, causing severe inflammation in the lungs and airways.

Dromedary camels serve as the main animal reservoir for this virus, carrying it without becoming seriously ill themselves.

Dromedary camels serve as the main animal reservoir for this virus, carrying it without becoming seriously ill themselves. People typically become infected through direct contact with these camels, their milk, or environments contaminated with camel secretions. The virus can survive on surfaces for extended periods, making indirect contact another possible route of infection. Camel racing, farming, and slaughterhouse work represent particularly high-risk activities in affected regions.

Human-to-human transmission occurs less easily than with many other respiratory viruses, but it can happen through close contact with infected individuals.

Human-to-human transmission occurs less easily than with many other respiratory viruses, but it can happen through close contact with infected individuals. Healthcare settings have seen several outbreaks when proper infection control measures weren't followed. Family members caring for sick relatives and people sharing living spaces with infected individuals also face elevated risk, especially when the infected person has severe symptoms involving coughing.

Risk Factors

Living in or traveling to Middle Eastern countries
Working with camels or in camel-related industries
Being 60 years of age or older
Having diabetes or kidney disease
Having chronic lung conditions like COPD
Having a weakened immune system
Working in healthcare without proper protection
Caring for infected family members at home
Having heart disease or high blood pressure
Being male

Diagnosis

How healthcare professionals diagnose Middle East Respiratory Syndrome (MERS):

1
Diagnosing MERS requires a combination of clinical evaluation and specialized laboratory testing, as symptoms often resemble those of other serious respiratory infections.
Diagnosing MERS requires a combination of clinical evaluation and specialized laboratory testing, as symptoms often resemble those of other serious respiratory infections. Doctors begin by taking a detailed medical history, paying particular attention to recent travel to Middle Eastern countries, contact with camels, or exposure to confirmed cases. They perform a physical examination focusing on breathing patterns, lung sounds, and signs of respiratory distress.
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Laboratory confirmation relies on detecting the virus through PCR testing of respiratory samples, including sputum, throat swabs, or fluid from the lower respiratory tract.
Laboratory confirmation relies on detecting the virus through PCR testing of respiratory samples, including sputum, throat swabs, or fluid from the lower respiratory tract. Blood tests can identify antibodies to the virus, though these may not appear until later in the illness. Chest X-rays and CT scans help assess lung involvement and rule out other conditions like pneumonia or lung collapse.
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Doctors must also consider other illnesses that cause similar symptoms, including influenza, severe acute respiratory syndrome (SARS), COVID-19, and bacterial pneumonia.
Doctors must also consider other illnesses that cause similar symptoms, including influenza, severe acute respiratory syndrome (SARS), COVID-19, and bacterial pneumonia. The combination of appropriate exposure history, characteristic symptoms, and positive laboratory results confirms the diagnosis. Given the serious nature of MERS, healthcare providers often begin supportive treatment while waiting for test results if clinical suspicion is high.

Complications

MERS can lead to severe, life-threatening complications that primarily affect the respiratory system and other vital organs.
Acute respiratory distress syndrome represents the most serious complication, occurring when the lungs become severely inflamed and cannot provide adequate oxygen to the body.
This condition requires intensive care support and mechanical ventilation, and many patients who develop this complication do not survive.
Other serious complications include kidney failure, which occurs in about half of patients with severe MERS, septic shock from overwhelming infection, blood clotting disorders, and secondary bacterial infections.
Some patients develop heart problems or experience complications affecting the brain and nervous system.
Even those who recover may face long-term effects including reduced lung function, persistent fatigue, and psychological impacts from their critical illness experience.

Prevention

Washing hands frequently with soap and water for at least 20 seconds
Using alcohol-based hand sanitizer when soap isn't available
Avoiding touching eyes, nose, and mouth with unwashed hands
Staying away from people who appear ill with respiratory symptoms
Covering coughs and sneezes with tissues or the elbow
Avoiding sharing eating utensils, cups, or personal items

Treatment Approaches

Treatment for MERS focuses on supportive care to help the body fight the infection, as no specific antiviral medications have proven definitively effective against this coronavirus.

Treatment for MERS focuses on supportive care to help the body fight the infection, as no specific antiviral medications have proven definitively effective against this coronavirus. Patients typically require hospitalization for close monitoring and oxygen support, as breathing difficulties represent the most dangerous aspect of the disease. Mechanical ventilation becomes necessary for those who develop severe respiratory failure.

Medication

Supportive measures include maintaining proper hydration through intravenous fluids, controlling fever with medications, and providing nutritional support.

Supportive measures include maintaining proper hydration through intravenous fluids, controlling fever with medications, and providing nutritional support. Some doctors have tried experimental antiviral drugs like ribavirin combined with interferon, though results remain inconclusive. Antibiotics may be prescribed if bacterial infections develop as complications, but they don't work against the virus itself.

MedicationAntibiotic

Patients in intensive care may require specialized treatments such as: - High-fl

Patients in intensive care may require specialized treatments such as: - High-flow oxygen therapy or positive pressure ventilation - Medications to support blood pressure and heart function - Kidney dialysis if kidney failure occurs - Blood thinners to prevent dangerous clots

MedicationTherapy

The goal throughout treatment remains supporting the patient's vital functions while their immune system works to clear the infection.

The goal throughout treatment remains supporting the patient's vital functions while their immune system works to clear the infection. Recovery can take weeks or months, and some people experience lasting effects on their lung function. Early recognition and prompt medical care improve outcomes, though the overall mortality rate remains concerning at approximately 35% of confirmed cases.

Living With Middle East Respiratory Syndrome (MERS)

Most people who survive MERS face a lengthy recovery process that requires patience, medical follow-up, and gradual return to normal activities. Lung function may remain impaired for months, making everyday tasks like climbing stairs or walking long distances more challenging than before. Pulmonary rehabilitation programs can help rebuild breathing capacity and overall strength through supervised exercise and breathing techniques.

Recovery strategies include: - Following prescribed medications exactly as direcRecovery strategies include: - Following prescribed medications exactly as directed - Attending all follow-up appointments for monitoring - Gradually increasing physical activity as tolerated - Getting adequate rest and nutrition to support healing - Avoiding exposure to respiratory irritants like smoke - Staying current with other vaccinations to prevent additional infections

The psychological impact of surviving a life-threatening illness shouldn't be overlooked.The psychological impact of surviving a life-threatening illness shouldn't be overlooked. Many people benefit from counseling or support groups to process their experience and adjust to any lasting physical limitations. Family members also need support, as caring for someone with MERS can be emotionally and physically demanding. With proper medical care and realistic expectations, many survivors can eventually return to meaningful, productive lives.

Latest Medical Developments

Latest medical developments are being researched.

Frequently Asked Questions

Can MERS spread easily from person to person like the flu?

MERS doesn't spread as easily between people as influenza or COVID-19. Most human-to-human transmission occurs among close contacts like family members or healthcare workers. The virus requires prolonged, close contact to spread effectively.

Is it safe to travel to Middle Eastern countries where MERS occurs?

Travel to affected regions carries some risk, but most travelers who take proper precautions remain safe. Avoid contact with camels, practice good hygiene, and seek immediate medical care if respiratory symptoms develop during or after travel.

Can I get MERS from drinking camel milk?

Consuming unpasteurized camel milk or undercooked camel meat may pose infection risk. Heat treatment kills the virus, so properly pasteurized dairy products and thoroughly cooked meat should be safe.

How long does it take to recover from MERS if I survive?

Recovery varies significantly depending on disease severity and individual factors. Mild cases may resolve in weeks, while severe cases requiring intensive care can take months to recover, with some people experiencing lasting effects.

Are children at lower risk for severe MERS than adults?

Yes, children and young adults typically experience milder symptoms or may be asymptomatic. The highest risk for severe disease and death occurs in adults over 60 and those with underlying health conditions.

Can MERS be prevented with any vaccines?

No vaccine currently exists for MERS prevention. Research continues on vaccine development, but behavioral precautions remain the primary method for avoiding infection.

Will having MERS once protect me from getting it again?

Scientists don't yet fully understand immunity after MERS infection. While antibodies develop, the duration and effectiveness of protection against reinfection remain unclear due to the limited number of cases studied.

Should healthcare workers be concerned about treating MERS patients?

Healthcare workers can safely care for MERS patients when proper infection control measures are followed, including appropriate personal protective equipment, isolation procedures, and careful hand hygiene.

How is MERS different from SARS or COVID-19?

While all three are caused by coronaviruses, MERS has a higher mortality rate but spreads less easily than COVID-19. SARS was eliminated in 2004, while MERS continues to cause sporadic cases, primarily in the Middle East.

Can pets or other animals besides camels carry MERS?

Dromedary camels are the primary animal reservoir. While some other animals can be infected experimentally, there's no evidence that common pets like cats or dogs play a role in natural transmission to humans.

Update History

Apr 26, 2026v1.0.0

Published by DiseaseDirectory