The Study Of Seasonal Characteristics And Syndrome Of Influenza-like Illness In Guangzhou

ObjectiveThrough a retrospective study to investigate the seasonal characteristics of influenza-like illness in Guangzhou,this will help the public and the health administration to more accurately and comprehensively understand the epidemic features of the influenza epidemic in Guangzhou and to Improve the effectiveness and effectiveness of influenza prevention and control measures,It is hoped that it will be of guiding significance for the prevention of influenza among the people of Guangzhou.To analyze the characteristics of TCM syndromes in the epidemic season of influenza-like illness to provide some objective data for TCM syndrome differentiation and treatment of influenza,and to improve the efficacy and effectiveness of Chinese medicine in the treatment of influenza.MethodsAbout 799 cases of this study were collected from Fever Outpatient Department of Emergency department Ersha Island Branch of Guangdong Province Traditional Chinese Medical Hospital from March 1,2015 to July 31,2015 after screening with the inclusion criteria and exclusion criteria of the flu or flu-like or suspected flu patients.data collected over the same period is from China meteorological data network,the collected data was included in the Excel database,and then Seasonality and syndrome analysis was performed on each case of influenza-like illness,and the relevant meteorological data were put in order and were analyzed through descriptive statistics and regression analysis.Then the data were imported into SPSS 17.0 for statistical analysis.The seasonal characteristics of influenza-like cases were analyzed by descriptive statistics,chi square test and Spearman statistical analysis.The study of TCM syndrome was analyzed by systematic cluster analysis.ResultsThrough analyse 799 cases of influenza-like cases with descriptive statistical analysis,according to the statistics of the number of cases of influenza-like illness each month in 2015,the visits number in March,May and June were higher than that in April and July,and the visits number in July was the least in the 5 months that included study.The high visits number with influenza-like illness was 25 to 60 years old,followed by the age was 0 to 15 years old,again for the age was 15 to 25 years old,which was almost concentrated in the youth and children stage.The daily visits number of influenza-like illness and the daily average relative humidity were statistically significant,and the correlation between them was weak positive correlation;The visits number of influenza-like illness each week and the mean relative humidity in the same period were statistically significant,and the correlation between them was medium positive correlation;The daily visits number of influenza-like illness had no correlation with the daily average air pressure,daily average temperature,daily maximum temperature,daily minimum temperature,daily average water vapor pressure,20-20 precipitation,daily average wind speed,daily maximum wind speed and daily sunshine duration.The weekly incidence of influenza-like illness had no correlation with the weekly average air pressure,weekly average temperature,weekly maximum temperature,weekly minimum temperature,weekly average water vapor pressure,weekly 20-20 precipitation,weekly average wind speed,weekly daily maximum wind speed and weekly sunshine duration.Through descriptive analysis,we can get the most common actual card types were wind-heat and damp-heat type,with 209 cases;Followed by was wind-cold-damp type with 185 cases,the number of phlegm-heat accumulation type and syndrome of insecurity of the defensive exterior were relatively large number,with 144 cases and 107 cases respectively,wind-heat type was not rare either,with 45 cases,other rare syndromes are evil-outside attack and qi-dificiency and blood-stasis type,wind-evil attack and weakness of spleen and stomach type,with 31 cases and 25 cases respectively,rare type of syndrome were wind-evil attack and phlegm-heat accumulation type,blood-stasis type,mind-cold due to exogenous evils and blood-stasis type,lung-qi deficiency and wet-mudddy accumulation type,lung-yin deficiency type,wet-muddy accumulation and blood-stasis type,wind-heat and liver-qi stagnation type,blood-stasis type,with 12 cases,10 cases,8 cases,4 cases,3 cases,3 cases and 1 case respectively.By cluster analysis,the four main categories can be obtained after the initial symptom analysis,These categories are:Category one:chills,cough,sore throat,muscle/joint pain,headache,white and greasy fur,slippery pulse,the syndrome differentiation is wind-cold-damp type,with 202 cases,accounted for 25.28%;Category two:aversion to wind,pharyngeal itching,low back pain,dizziness,nausea and vomiting,constipation,insomnia,red tip tongue,thin and yellowish fur,slightly hellowish fur,yellowish greasy fur,superficial and rapid pulse,slippery pulse,taut pulse,the syndrome differentiation is wind-heat and damp-heat type,with 307 cases,accounted for 38.42%;Category three:fatigue and fatigue,expectorate white phlegm,thin nasqal idischarge,poor appetite,dry and bitter mouth,yellow urine/urinary discomfort,pink tongue,thin and whitish fur,floating pulse,the syndrome differentiation is syndrome of insecurity of the defensive exterior type,with 120 cases,accounted for 15.02%;Category four:expectorate yellowish sputum,rhinobyon,yellow rhinorrhea,red tongue,yellowish greasy fur,wiry and rolling pulse,the syndrome differentiation is accumulation of phlegmheat in the lung type,with 170 cases,accounted for 21.28%.ConclusionThe highest incidence of influenza-like cases in june,The lowest incidence of influenza-like cases in july;The age distribution of influenza like cases is mainly concentrated among young,middle-aged and young children;the correlation between the daily incidence of influenza-like illness and the daily average relative humidity was weak positive correlation.the correlation between the weekly incidence of influenza-like illness and the mean relative humidity in the same period was medium positive correlation.The common traditional Chinese medicine syndromes of influenza-like illness are wind-heat and damp-heat type,wind-cold-damp type,phlegm-heat accumulation type,syndrome of insecurity of the defensive exterior type;The relatively rare traditional Chinese medicine syndromes are wind-heat type,evil-outside attack and qi-dificiency and blood-stasis type,wind-evil attack and Weakness of spleen and stomach type,wind-evil attack and phlegm-heat accumulation type,blood-stasis type,mind-cold due to exogenous evils and blood-stasis type,lung-qi deficiency and wet-muddy accumulation type,lung-qi deficiency type,wet-muddy accumulation and blood-stasis type,wind-heat and liver-qi stagnation type,blood-stasis type.