Four methods to identify influenza

Four methods to identify influenza
1, contact history and collective history of short-term morbidity in patients with influenza have more symptoms and signs;
2, typical symptoms and signs of influenza morbidity hurried, more systemic symptoms, patients with sustained high fever, body temperature as high as 40 ℃, muscle and joint pain, and stuffy nose, runny nose, pharyngodynia such as late onset of symptoms;
3, the characteristics of influenza pandemic occur suddenly, spreads rapidly and at the same time there are obvious areas of pop;
4, laboratory examination
Routine check-up: WBC reduced eosinophils disappear, a relative increase in lymphocytes. If the merger of bacterial infection, then the total number of leukocytes and neutrophils High.
Virus isolation: Early access to 70% of the positive results, the general in the seventh day that the incidence of positive results can not be obtained.
Immunofluorescence technique: check lotion nasal epithelial cells in the smear specimen, or to swallow liquid rinse inoculation in cell culture tubes, applied to detect fluorescent antibody technique, resulting in fast, high sensitivity, contribute to early diagnosis.
Serological examination: hemagglutination inhibition test and complement fixation test. Hemagglutination inhibition test higher specificity, and complement fixation test higher sensitivity. These methods only as a retrospective diagnosis of illness, not suitable for rapid diagnosis.