The Ebola vaccine being prioritized in Congo has a track record against a different virus type

Health workers and other front-line Ebola responders are being prioritized for Ervebo, PBS NewsHour reports — the vaccine that was effective in past Ebola outbreaks caused by a different, more common type of virus. That qualification is the part worth slowing down for. Vaccine names travel well; the fine print about which strain a vaccine earned its record against travels less well.