Ebola virus disease (EVD) is a rare and often-fatal infection caused by one of the five strains of the Ebola virus. Ebola first appeared in 1976 in a simultaneous outbreak in the areas that are now Sudan and the Democratic Republic of the Congo, according to the World Health Organization (WHO).ive virus species have been identified, four of which are known to cause disease in humans: Ebola virus (Zaire ebolavirus); Sudan virus (Sudan ebolavirus); Tai TaÃ¯ forest (Virus Tai taÃ¯, forest Ebolavirus formerlyâCote cÃ´te); d Ivoire ebolavirus (And bundibugyo). virus bundibugyo ebolavirus
Fluid retention around the ankles often involves the rest of the body, too. A blood clot in the veins may cause pooling of fluid in the lower limbs, while swelling of the ankles may be accompanied by difficulty in breathing and the inability to lie flat on the bed in heart failure.
This usually occurs as the result of a problem with the left heart, according to David S. Feigin, M.D. of Johns Hopkins University. This condition causes excess fluid to build up in the blood vessels, which leads to water retention in the feet, ankles and legs.