DAKAR, Senegal—Guinea has officially declared it has an Ebola epidemic after at least three people have died and four others have been infected in the West African nation. Neighboring Sierra Leone and Liberia have put their citizens on high alert as the three West African nations battled the world’s deadliest Ebola outbreak from 2014 to 2016, which began in Guinea and in which more than 11,300 people died. Sierra Leone’s President Julius Maada Bio has flown to consult with Guinean President Alpha Conde. Guinea’s new Ebola outbreak occurred in N’Zerekore, in southern Guinea, where health officials detected suspicious cases of Ebola with patients presenting symptoms of diarrhea, vomiting, and bleeding. The sick had participated in the burial of a nurse on Feb. 1 in Gouake, according to Guinea’s Minister of Health Remy Lamah, who added that the first investigation counted seven cases, all of the people over the age of …