Chinese Vice Premier Li Keqiang (2nd R. front) gestures while visiting the Chengdu Infectious Disease Hospital, which accepted Chinese mainland's first confirmed A/H1N1 patient surnamed Bao, in Chengdu, capital of southwest China's Sichuan Province, May 11, 2009. [Xinhua/Pang Xinglei]

Chinese leaders, including President Hu Jintao and Premier Wen Jiabao, Monday called for enhanced vigilance and strict steps against the A/H1N1 influenza after the country's mainland reported its first case.

"We must attach great importance to the fact that the flu epidemic is still spreading in some countries and regions, and that China has discovered one case," Hu said after learning about the latest development of the epidemic.

He ordered governments at all levels to spare no efforts to put all emergency response measures in place in order to curb further spread of the disease.

A Chinese mainland male surnamed Bao, who recently returned from the United States, tested positive for the A/H1N1 influenza early on Monday, becoming the first such case reported on the Chinese mainland.

Chinese Vice Premier Li Keqiang (2nd L) communicates with the confirmed A/H1N1 patient through video at the Chengdu Infectious Disease Hospital, which accepted Chinese mainland's first confirmed A/H1N1 patient surnamed Bao, in Chengdu, capital of southwest China's Sichuan Province, May 11, 2009.[Xinhua/Pang Xinglei]

Chinese Vice Premier Li Keqiang visited the flu patient, medical staff and people under medical observation Monday in Chengdu, capital of southwestern Sichuan Province.

Li conveyed the concerns and greetings of President Hu and Premier Wen to them, listened to reports on flu prevention and control by the local health authorities and inspected the treatment, prevention and control work.

He called for enhanced prevention and control of the A/H1N1 influenza "in a spirit of taking responsibility for the mass's health" so as to ensure public health and safety.

The 30-year-old patient was at the Chengdu Infectious Disease Hospital. Those who had close contact with him were isolated for observation.

The patient is currently in a stable condition with a normal body temperature, and is "recovering", the health ministry said.

Li came to the Chengdu Infectious Disease Hospital and saw the patient who lived in a negative pressure isolation room via video.

He asked doctors about Bao's condition and treatment in detail and told medical staff to treat the patient scientifically in line with a preset plan so that he could recover soon.

Li asked medical staff to enhance self-protection and prevent hospital infection and the spread of the disease.