A Philippine pig farm worker has tested positive for the Ebola-Reston virus, Health Secretary Francisco Duque and the WHO said Friday.
The strain is different from the Ebola sub-types found in Africa that cause deadly haemorrhagic fever in humans.
Duque told a news conference that the farm worker carries the virus's anti-bodies in his blood.
"Otherwise he is healthy and has no sign of any sickness," he said.
The identity and age of the man and the location of the farm was not disclosed.
The announcement was made at the conclusion of a World Health Organization-led mission to the Philippines that investigated the viral outbreak on pig farms.
The government earlier quarantined several farms in the northern Philippine towns of Pandi and Talavera after 6,000 swine there were found to carry the Ebola-Reston virus.
This Ebola strain, which is found only in the Philippines, had been confined to monkeys. But the latest outbreak among pigs was the first time it has jumped species and infected humans.
Ebola-Reston was first detected in 1989 in laboratory monkeys sent from the Philippines to Reston, Virginia in the United States.