I think the reason for the terminology shift was to use 5% bleach concentrate to reference a starting point for their 1:10 and 1:100 (dilution) mixtures.

...As of Aug. 25, more than 240 healthcare workers have developed the disease in Guinea, Liberia, Nigeria, and Sierra Leone, and more than 120 have died, according to the World Health Organization.

Many of these infections occurred when healthcare workers were removing the personal protective gear - masks, gowns, gloves or full hazmat suits used to care for the patients, said biosafety experts. ...

On a related note, the news that the Dallas DA may prosecute Mr Duncan could be the wrong thing to do from a public health perspective. I think that will simply serve to stigmatize the sick (perhaps even Americans who get infected) and could drive infected people underground and that's the last thing you want. I don't think presecution is a deterrant at all to keeping infected people out of the US but it may change people's behavior in undesirable ways once they are here.

The priority should be to find everyone who is infected or potentially infected, ideally, before they become infectious. Facing punishment just delays that discovery process, making it more likely an infected person becomes infectious out in public.

Q
Can a blood test show if a person has the Ebola virus before they are symptomatic?
A
With blood tests that we have now, no. In fact, in order to be fairly certain, you have to have the first symptom, which is a fever, for about three days before there’s enough virus coursing around in your blood for the blood test to be accurate.

Very preliminary "breaking news" (which could be wrong) for the Washington DC area.

Breaks in logic are common with many of the conspiracy theories. People see/hear of an activity and then they see a result (while not seeing a direct relationship) and they assume that the first activity caused the result when they may be unrelated and totally independent of each other.

Although officials are pleased that success was achieved in a country of 177 million that is a major transport and business hub — and whose largest city, Lagos, has 21 million people — the lessons here are not easily applicable to the countries at the epicenter: Guinea, Liberia and Sierra Leone. Public health officials in those countries remain overwhelmed by the scale of the outbreak and are desperate for additional international assistance.
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After the first patient — a dying Liberian-American — flew into Lagos on July 20, Ebola spread to 20 other people there and in a smaller city, Port Harcourt.

They have all now died or recovered, and the cure rate — 60 percent — was unusually high for an African outbreak.

Meanwhile, local health workers paid 18,500 face-to-face visits to repeatedly take the temperatures of nearly 900 people who had contact with them. The last confirmed case was detected on Aug. 31, and virtually all contacts have passed the 21-day incubation period without falling ill.