"One of the big deal about current strain is that it doesn't manifest symptoms until 1-3 weeks which gives plenty of time for virus to spread" ""The patients b

"One of the big deal about current strain is that it doesn't manifest symptoms until 1-3 weeks which gives plenty of time for virus to spread" ""The patients become contagious once they begin to show symptoms. They are not contagious during the incubation period."" Source: http://www.who.int/csr/disease/ebola/faq-ebola/en/ http://www.who.int/csr/disease/ebola/faq-ebola/en/