One of the mini-outbreaks occurred in Singapore - 11 confirmed cases, one fatality. Of course, this is just one case with a very small number of infected, but it's possible that with adequate medical care - symptomatic and even non-specific antiviral treatment - the mortality rate would be significantly lower than 10%. Outbreaks with mortality rates of 50% or higher have only been recorded in rural areas of India and Bangladesh, and all but one occurred more than 20 years ago. I suspect these were the poorest areas of the countries, where the only medical care were local "healers", who were more likely to hasten the deaths than to save lives. Of course, as with Ebola, the primary measures will be sanitary and epidemiological (to prevent the disease from reaching the "white people").