Symptoms of avian influenza H9

summary

Recently, there are many cases of human infection with avian influenza. The confirmed cases are mainly characterized by typical viral pneumonia, acute onset, high fever (above 38 ℃), cough and other respiratory tract infection symptoms in the early stage of the disease. With the recent expansion of the avian influenza epidemic, local governments, especially medical departments are taking positive measures to quickly and effectively detect and prevent the spread of the epidemic. In view of this, all provinces and cities have set up designated hospitals for avian influenza detection to deal with sudden illness, and temperature detection is the first protection and detection barrier of designated hospitals. Let's talk about the symptoms of avian influenza H9.

Symptoms of avian influenza H9

Epidemiology of avian influenza: the infection of human avian influenza virus is consistent with that of avian influenza virus in chickens. It is usually sporadic, and the route of transmission is close contact with chickens and ducks. The incidence of avian influenza has nothing to do with age and gender. People are generally susceptible.

Clinical features of avian influenza: in the early stage of onset, the symptoms are similar to influenza, such as fever, runny nose, cough, sore throat, general pain, etc. fever is generally above degree, and some cases have nausea, abdominal pain, diarrhea and other symptoms. Later, about half of the cases have pulmonary inflammation. Most mild cases have good prognosis, but a few cases may develop pneumonia, leading to respiratory distress syndrome, pulmonary hemorrhage and renal failure septic shock He died of Creole syndrome.

Examination of avian influenza: the total number of white blood cells in peripheral blood is generally not high or low. In severe patients, the total number of white blood cells and lymphocytopenia are common. Virus antigen and gene are detected. Respiratory tract samples of patients are taken to detect influenza A virus nucleoprotein antigen (NP) and avian influenza virus subtype H antigen by immunofluorescence (or enzyme-linked immunosorbent assay). RT-PCR can also be used to detect avian influenza virus subtype specific H antigen Isolation of avian influenza virus from patients' respiratory tract specimens (such as nasopharynx secretions, oral gargle, tracheal aspirates or respiratory epithelial cells). Serological examination of double serum anti avian influenza virus antibody titers at the early stage of onset and convalescence is more than times higher, which is helpful for retrospective diagnosis. Chest imaging examination: chest X-ray examination of severe patients can show unilateral or bilateral lung A small number of inflammatory diseases can be accompanied by pleural effusion.

matters needing attention

Strengthen the detection of poultry, thoroughly disinfect the environment, isolate the clinical patients, and take amantadine orally to prevent the close contact with poultry during the epidemic of avian influenza.