Several organizations are evacuating workers from the three countries where a five-month old Ebola outbreak has worsened.

The Peace Corps said Wednesday that it was temporarily removing 340 volunteers working in Liberia, Sierra Leone and Guinea because of the virus's spread. Two corps volunteers were placed in isolation and under observation—though they aren't symptomatic—after coming in contact with an individual who later died of Ebola, a spokeswoman said.

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