What does "H7N9" mean?

H7N9 is a subtype of avian influenza. H7N9 subtype avian influenza virus is a type of influenza A.. Human infection with H7N9 avian influenza refers to an acute respiratory infectious disease caused by H7N9 subtype avian influenza virus.

H7N9 avian influenza is a new type of avian influenza, which was first discovered in Shanghai and Anhui at the end of March 201March. H7N9 avian influenza is a new subtype of influenza virus discovered for the first time in the world. It has not been included in the surveillance and reporting system of notifiable infectious diseases in China, and the vaccine was not introduced until the beginning of April 201March. All patients infected with this virus have symptoms such as fever in the early stage. As of April 20 13, it has not been confirmed whether this virus has the characteristics of human-to-human transmission. From April 2065438 to April 2003, it was found that the gene of H7N9 avian influenza virus came from wild birds in East Asia and the gene rearrangement of chickens in China, Shanghai, Zhejiang and Jiangsu. Up to 20 15 065438+ 10/0, 34 people were diagnosed 10, 37 people died and 76 people recovered. These cases are distributed in Beijing, Shanghai, Jiangsu, Zhejiang, Anhui, Shandong, Henan, Taiwan Province, Fujian, Dongguan and Shanwei.

Brief introduction of virus:

H7N9 subtype avian influenza virus is a kind of influenza A, which was previously found only in birds and no human infection was found.

Influenza is an acute respiratory infection caused by influenza virus. Influenza viruses can be divided into three types: A, B and C. Among them, according to the characteristics of influenza virus, influenza A can be divided into HNX * * * 135 subtype. All human influenza viruses can cause avian influenza, but not all avian influenza viruses can cause human influenza. Among avian influenza viruses, H5, H7 and H9 can be transmitted to people, and H5 is highly pathogenic.

On September 29th, 2007+2065438, the research group of School of Basic Medical Sciences of Fudan University discovered the highly active antiviral all-humanized antibody m826 against the new epitope of H7N9 avian influenza virus.

Disease symptoms:

1. incubation period: according to the incubation period of influenza and the investigation results of existing cases of H7N9 avian influenza virus infection, the incubation period is generally 3-4 days.

2. Symptoms: Patients usually show flu-like symptoms, such as fever, cough and scanty phlegm, which may be accompanied by headache, muscle pain and general malaise.

You can also have a runny nose, stuffy nose and sore throat. When the lung disease is serious or the disease develops rapidly, some patients will have chest tightness and dyspnea.

Severe patients developed rapidly, and severe pneumonia appeared in 5-7 days. Most of them have a body temperature above 39℃ and have difficulty breathing, which may be accompanied by hemoptysis and phlegm. It can rapidly develop into acute respiratory distress syndrome, sepsis, septic shock and even multiple organ dysfunction. Some patients may have mediastinal emphysema and pleural effusion. Symptoms.

A considerable proportion of critically ill patients are also complicated with injuries or failures of other systems or organs, such as heart failure caused by myocardial injury. Some patients also have digestive system symptoms such as gastrointestinal bleeding and emergency ulcer, and some severe patients have coma and disturbance of consciousness.