Indonesian health officials say seven people from a village in northern Sumatra are being treated for what doctors suspect may be bird flu.

The villagers come from the same district where bird flu killed seven members of an extended family in May.

Officials say the suspected new cases include two young siblings and a neighbor's baby. They have been admitted to a hospital in the city of Medan.

Local authorities are carrying out tests on the seven villagers to determine whether they have the dangerous H5N1 strain of the virus.

The previous cluster of bird flu deaths in northern Sumatra was the largest of its kind since the global outbreak began, and raised concerns about human-to-human transmission of the virus.

Indonesia has confirmed 42 deaths from bird flu, tying Vietnam for the world's highest number of fatalities.

Some information for this report was provided by AP and Reuters.