What is Ebola?
Ebola Virus Disease (EVD), previously known as Ebola hemorrhagic fever, is a rare and deadly disease that is native to several African countries. It is caused by infection with Ebola virus, which is contracted through direct contact with a sick person’s blood or body fluids, contact with contaminated objects (such as needles), or contact with infected animals.
Who is at risk?
Those at risk for EVD include:
When do symptoms appear after infection?
Symptoms can appear anywhere from 2 to 21 days after infection. The incubation period for EVD – the time from exposure to when signs or symptoms appear -- is usually 8-10 days, but can range from 2-21 days. The risk for transmission is greatest during the later stages of the illness. Ebola can only be transmitted when the ill person has symptoms.
Is there a vaccine for EVD?
No vaccine currently exists for EVD.
However, the Department of Health and Human Services, including the Centers for Disease Control and Prevention (CDC), the National Institutes of Health (NIH) and the Food and Drug Administration (FDA) are leading the effort to develop and test vaccines and new treatments. Some investigational vaccines have been developed. The NIH recently announced that initial human testing of an investigational vaccine to treat Ebola would begin in September, and a vaccine developed through the U.S. Department of Defense also will start testing in humans later this year.
How is EVD treated?
EVD symptoms are treated with supportive care, including providing intravenous fluids and balancing electrolytes, maintaining oxygen status and blood pressure, and treating other infections that may occur.
What are the potential complications of EVD infection?
Data gathered on patients who have recovered from EVD show long-term complications ranging from joint and muscle pain to vision problems. EVD can potentially be fatal. Recovery depends on early diagnosis, good clinical care, and the patient’s immune response. Evidence shows that people who recover from EVD infection develop antibodies that last for at least 10 years.
How can I prevent transmission?
Basic infection control procedures and good hygiene can prevent infection. Just like any other virus, EVD can be prevented by:
While we do not anticipate Ebola impacting our community, out of an abundance of caution, we have:
Hasn’t EVD spread to the United States?
On September 30, 2014, the CDC confirmed the first case of Ebola to be diagnosed in the United States in a person who had traveled from Liberia to Dallas, Texas. The patient had no symptoms when leaving West Africa but developed symptoms approximately four days after arriving in the United States. The patient sought medical care at Texas Health Presbyterian Hospital of Dallas, was evaluated and discharged, and later readmitted and tested for Ebola infection. His diagnosis was confirmed and attempts to control his infection, which was quite progressed, began. He died on October 8.
Two additional secondary cases of EVD were identified when two nurses who cared for the patient at Texas Health Presbyterian Hospital of Dallas developed symptoms. Both nurses were quickly identified and isolated.
In addition, a medical aid worker who volunteered in Guinea, one of the three West African nations experiencing an Ebola epidemic, and since returned to the United States tested positive for Ebola on October 23, according to the New York City Health Department laboratory, which is part of the Laboratory Response Network overseen by the CDC.
The patient has been notified of the test results and remains in isolation at Bellevue Hospital in New York City, one of eight New York State hospitals that has been designated to treat Ebola patients. A specially trained CDC team determined earlier this week that the hospital has been trained in proper protocols and is well prepared to treat Ebola patients.
CDC and public health officials are taking precautions to identify people who had close personal contact with the infected persons.
How can I find out more information?
You may contact the hospital with questions, or talk to your doctor or primary healthcare provider. Our staff has received extensive training and guidance on identifying, managing and treating EVD. You also can visit the CDC Ebola site at www.cdc.gov/ebola, or the World Health Organization (WHO) Ebola virus disease (EVD) site at www.who.int/csr/disease/ebola/en.