NANJING - Four people in East China's Jiangsu province have been confirmed as being infected with the lesser-known H7N9 bird flu, local authorities said Tuesday.

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Low risk for humans to contract H7N9 bird flu

China's health authority said humans are at a very low risk for contracting the lesser-known H7N9 bird flu, according to a Tuesday report in the Beijing News.

Beijing closely monitoring bird flu virus

Public health authorities in Beijing said on Tuesday that they are keeping a close eye on the H7N9 bird flu virus that has killed two in east China.