North China's Shanxi province reported its first H7N9 case of the year on Tuesday evening.
A 66-year-old woman surnamed Zhang from Datong City tested positive by the city's center for disease and prevention (CDC), the Shanxi provincial CDC and the Chinese CDC in the past three days.
She is now in the hospital and described as in "serious but stable condition," said the Shanxi provincial health and family planning commission.
Experts from the Chinese CDC and the provincial CDC were sent to Datong to help with treatment of the patient as well as investigation and prevention work for the disease.
So far those who had contact with Zhang didn't show any symptoms of infection.
Nationwide, a total of 96 people were reportedly infected by the H7N9 virus in March, leaving 47 dead, according to the national health and family planning commission.