Source is Reuters.
Therefore, be very skeptical.
Reuters tries hard to be unbiased.
Perfect? No... But they try.
"...the outbreak is expected to continue for some time. WHO’s operational response plan extends over the next several months. Staff at the outbreak sites see evidence that the numbers of reported cases and deaths vastly underestimate the magnitude of the outbreak..."http://www.who.int/csr/disease/ebola/overview-20140814/en/
Knowing how infectious diseases are spread it is quite certain that the numbers are underestimated. With small isolated villages and Africans afraid of medical workers I would be more skeptical if they reported the numbers were accurate.