Probable Case of Human-to-Human Bird Flu Transmission Reported

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The Pakistan case involved a poultry worker who became infected and survived last year, while three of his brothers were also infected, and two died, according to a BBC News report on Saturday.

Genetic-sequencing tests on bird flu virus samples collected from three of the four brothers confirmed human-to-human transmission of the H5N1 virus, the World Health Organization reported.

The northwestern region of Pakistan has 85 percent of the country's poultry farms and was one of the regions hardest hit by bird flu last year BBC News noted.

More information

The World Health Organization has more on avian flu.