GENEVA (Reuters) -- The World Health Organization (WHO) confirmed on Thursday a single case of human-to-human transmission of the H5N1 bird flu virus in a family in Pakistan but said there was no apparent risk of it spreading wider.

A statement from the UN agency said tests in its special laboratories in Cairo and London had established the ""human infection"" through presence of the virus ""collected from one case in an affected family.""
But it said a WHO team invited to Pakistan to look into an outbreak involving up to nine people, from late October to December 6 had found no evidence of sustained or community human-to-human transmission.
No identified close contacts of the people infected, including health workers and other members of the affected family, had shown any symptoms and they had all been removed from medical observation, the WHO added.