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Marbug Virus Disease || Causes, Transmission, Signs and Symptoms

What is Marbug virus?
Marburg virus is the causative agent of Marburg haemorrhagic fever (MHF), a disease with a case fatality ratio of up to 88%. 



Marburg haemorrhagic fever was initially detected in 1967 after simultaneous outbreaks in Marburg, from which the disease takes its name, and Frankfurt in Germany; and in Belgrade, Serbia.

Marburg and Ebola viruses are the two members of the Filoviridae family (filovirus). Though caused by different viruses, the two diseases are clinically similar. Both diseases are rare and have the capacity to cause dramatic outbreaks with high fatality rates.
Outbreaks
Two large outbreaks that occurred simultaneously in Marburg and Frankfurt in Germany, and in Belgrade, Serbia, in 1967, led to the initial recognition of the disease. 

Read about a case just confirmed in Uganda here

The outbreak was associated with laboratory work using African green monkeys (Cercopithecus aethiops) imported from Uganda. Subsequently, outbreaks and sporadic cases have been reported in Angola, Democratic Republic of the Congo, Kenya, South Africa (in a person with recent travel history to Zimbabwe) and Uganda. 
In 2008, two independent cases were reported in travelers who visited a cave inhabited by Rousettus bat colonies in Uganda.
How is it Transmitted?
Originally, human infection results from prolonged exposure to mines or caves inhabited by Rousettus bats colonies.
Transmission is mainly human-to-human, resulting from close contact with the blood, secretions, organs or other bodily fluids of infected persons
Burial ceremonies where mourners have direct contact with the body of the deceased can play a significant role in the transmission of Marburg. Transmission via infected semen can occur up to seven weeks after clinical recovery.
Transmission to health-care workers has been reported while treating Marburg patients, through close contact without the use of correct infection control precautions. Transmission via contaminated injection equipment or through needle-stick injuries is associated with more severe disease, rapid deterioration, and, possibly, a higher fatality rate.
What are the Signs and symptoms?
The incubation period (interval from infection to onset of symptoms) varies from 2 to 21 days.
Illness caused by Marburg virus begins abruptly, with high fever, severe headache and severe malaise. Muscle aches and pains are a common feature. Severe watery diarrhoea, abdominal pain and cramping, nausea and vomiting can begin on the third day. 

Diarrhoea can persist for a week. The appearance of patients at this phase has been described as showing “ghost-like” drawn features, deep-set eyes, expressionless faces, and extreme lethargy. 
In the 1967 European outbreak, non-itchy rash was a feature noted in most patients between 2 and 7 days after onset of symptoms.
Many patients develop severe haemorrhagic manifestations between 5 and 7 days, and fatal cases usually have some form of bleeding, often from multiple areas. Fresh blood in vomitus and faeces is often accompanied by bleeding from the nose, gums, and vagina. Spontaneous bleeding at venepuncture sites (where intravenous access is obtained to give fluids or obtain blood samples) can be particularly troublesome. During the severe phase of illness, patients have sustained high fever. 
Involvement of the central nervous system can result in confusion, irritability, and aggression. Orchitis has been reported occasionally in the late phase of disease (15 days).
In fatal cases, death occurs most often between 8 and 9 days after symptom onset, usually preceded by severe blood loss and shock.

What are u the treatments and accines?
Severe cases require intensive supportive care, as patients are frequently in need of intravenous fluids or oral rehydration with solutions containing electrolytes.
No specific treatment or vaccine is yet available for MHF. Several vaccine candidates are being tested but it could be several years before any are available. New drug therapies have shown promising results in laboratory studies and are currently being evaluated.

Resources/Further Reading:
Emedicine.net
WHO

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Updated: October 19, 2017 — 5:45 pm

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The Author

SIRPHREN

Sunday Dapo OBEMBE is a Nurse, Blogger, and a writer. He owns MULTI-LOADED EMPIRE. Knowledge of health is wealth.

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