A man who died in southern Nigeria in a suspected case of Ebola did not have the deadly virus, the World Health Organization (WHO) has said.
The country was declared free of the virus a year ago.
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Ten people were quarantined after coming into contact with the man, who was said to have shown Ebola-like symptoms.
A WHO spokesman later confirmed the man had tested negative for Ebola and Lassa fever.
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He died shortly after being admitted to hospital in Calabar, officials said.
On Wednesday, the three countries worst affected by Ebola - Guinea, Sierra Leone and Liberia recorded their first week with no new cases since the outbreak began in March 2014.
More than 11,000 people died in the West African Ebola outbreak, the worst known occurrence of the disease in history
Queeneth Kalu, Chair of Medical Advisory Committee of the University of Calabar Teaching Hospital (UCTH) made the revelation on Thursday in Calabar while addressing newsmen.
Kalu said blood samples have been sent to the Ebola Diagnosing Centre in Benin Edo State.
It was also revealed those quarantined are principally nurses who attended to the patient and those who came in contact with him before his death.
Source: BBC