Very good infographic included in this article: The virus can lurk in the body for more than a week before it begins a cascading meltdown of the immune system, blood vessels and vital organs. Please download from the website link in the article. Source of the infographic: CDC, New England Journal of Medicine, NIH, Science, The Lancet, Nature. By Patterson Clark, Darla Cameron and Sohail Al-Jamea, The Washington Post. Published October 3, 2014.