Updated

A 4-year-old Indonesian boy has died from bird flu, bringing the death toll to 160 in the world's hardest-hit country.

Health Ministry official Rita Kusriastuti said Tuesday that the boy died Dec. 6 in Tangerang city, just west of Jakarta, the capital. He developed symptoms of a cold and fever on Nov. 30 and was treated at a public health center before being hospitalized the same day he died.

Kusriastuti said the boy, from the West Java district of Bogor, was believed to have been infected with the H5N1 virus after having direct contact with dead fowl around his house.

Bird flu has killed at least 360 people worldwide since 2003. It remains hard for people to catch, but experts fear it could mutate into a more deadly form.