Wednesday, 10 September 2014

Ebola Awareness

ebola virus

Ebola virus and Marburg virus
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Ebola is an infectious and generally fatal disease marked by fever and severe internal bleeding, spread through contact with infected body fluids by a filo virus ( Ebola virus ), whose normal host species is unknown. Continue...


Prevention
Prevention focuses on avoiding contact with the viruses. The following precautions can help prevent infection and spread of Ebola and Marburg:
- Avoid areas of known outbreaks. Before traveling to Africa or any other place, find out about current epidemics by checking the Centers for Disease Control and Prevention website.
- Wash your hands frequently. As with other infectious diseases, one of the most important preventive measures is frequent hand-washing. Use soap and water, or use alcohol-based hand rubs containing at least 60 percent alcohol when soap and water aren’t available.
- Avoid bush meat. In developing countries, avoid buying or eating the wild animals, including nonhuman primates, sold in local markets.
- Avoid contact with infected people. In particular, caregivers should avoid contact with the person’s body fluids and tissues, including blood, semen, vaginal secretions and saliva. People with Ebola or Marburg are most contagious in the later stages of the disease.
- Follow infection-control procedures. If you’re a health care worker, wear protective clothing, such as gloves, masks, gowns and eye shields. Keep infected people isolated from others. Dispose of needles and sterilize other instruments.
- Don’t handle remains. The bodies of people who have died of Ebola or Marburg disease are still contagious. Specially organized and trained teams should bury the remains, using appropriate safety equipment.

Vaccine development
Scientists are working on a variety of vaccines that would protect people from Ebola or Marburg viruses. Some of the results have been promising, but further testing is needed.  
Symptoms
Signs and symptoms typically begin abruptly within five to 10 days of infection with Ebola or Marburg virus. Early signs and symptoms include:
Fever
Severe headache
Joint and muscle aches
Chills
Weakness
Over time, symptoms become increasingly severe and may include:
Nausea and vomiting
Diarrhea (may be bloody)
Red eyes
Raised rash
Chest pain and cough
Stomach pain
Severe weight loss
Bleeding, usually from the eyes, and bruising (people near death may bleed from other orifices, such as ears, nose and rectum)
Internal bleeding


Causes
Ebola virus has been found in African monkeys, chimps and other nonhuman primates. A milder strain of Ebola has been discovered in monkeys and pigs in the Philippines. Marburg virus has been found in monkeys, chimps and fruit bats in Africa.

Transmission from animals to humans
Experts suspect that both viruses are transmitted to humans through an infected animal’s bodily fluids. Examples include:
Blood. Butchering or eating infected animals can spread the viruses. Scientists who have operated on infected animals as part of their research have also contracted the virus.
Waste products: Tourists in certain African caves and some underground mine workers have been infected with the Marburg virus, possibly through contact with the feces or urine of infected bats.

Transmission from person to person
Infected people typically don’t become contagious until they develop symptoms. Family members are often infected as they care for sick relatives or prepare the dead for burial.
Medical personnel can be infected if they don’t use protective gear, such as surgical masks and gloves. Medical centers in Africa are often so poor that they must reuse needles and syringes. Some of the worst Ebola epidemics have occurred because contaminated injection equipment wasn’t sterilized between uses.
There’s no evidence that Ebola virus or Marburg virus can be spread via insect bites.

Treatments and drugs
No antiviral medications have proved effective in treating infection with either virus. Supportive hospital care includes:
Providing fluids
Maintaining blood pressure
Providing oxygen as needed
Replacing lost blood
Treating other infections that develop

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