Symptoms include fever, nausea, vomiting and diarrhea.
Less than two weeks in Liberia was 28 cases of an unknown illness, 12 of them fatal, reported on Friday on its website the Federal service.
The disease is manifested by fever, nausea, vomiting and diarrhea.
However, as noted in the message, tests the causative agent of Ebola was negative. It is assumed that the reason could be the consumption of infected food or water.
The study of disease specialists from who and other international organizations.
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