Analysis of Respiratory Tract Infection Status and Detection Index in Children in Tanggu Area

Yang Xianping

doi:10.3969/j.issn.1004-5775.2025.06.022

Abstract：Objective:To explore the infection status and detection index changes during the outbreak period of respiratory tract infections in children,and to analyze their differential significance.Methods:The data of 2 741 children who came to the hospital during the outbreak of respiratory tract infection from November 1 to November 30,2023 were retrospectively collected.A total of 105 cases of influenza A(influenza A)positive,34 cases of influenza A negative,118 cases of mycoplasma pneumoniae positive and 29 cases of mycoplasma pneumoniae negative were randomly selected and analyzed.The expression of infection index in different age groups,the change of positive rate and infection situation were statistically analyzed.Results:The average values of white blood cells(WBC),C-reactive protein(CRP)and serum amyloid A(SAA)were all increased in patients with mycoplasma pneumoniae infection,and the ratio of neutrophil to lymphocyte(N/L)was higher in patients with A swine flu infection than in patients with mycoplasma positive infection,with statistically significant difference(t=3.45,1.81,2.93,1.45,1.53;P＜0.05).There was significant difference between children with A/H1N1 infection and mycoplasma positive in different age groups(χ2=41.10,10.08;P＜0.05).There was no significant difference between children with different genders(χ2=0.66,P＞0.05).There was significant difference between the children with mycoplasma pneumoniae infection(χ2=25.37,P＜0.05).Conclusion:White blood cell count,neutrophil count,granulocyte ratio and CRP detection can be used as differential indicators in respiratory infection outbreak.The white blood cell count,neutrophil,granulocyte ratio and CRP are relatively low in patients with H1N1 infection.The white blood cell count increased in different degrees,the neutrophil increase is not obvious,the granulocyte ratio is not obvious,and the CRP index is relatively expressed.The infection rate of mycoplasma pneumoniae in girls is significantly higher than that in boys,and there is no significant gender difference in swine flu.