Epidemiological characteristics of Mycoplasma pneumoniae infection in 220 children with respiratory tract infections
Objective To analyze the epidemiological characteristics of Mycoplasma pneumoniae(MP)infection in 220 children with respiratory tract infections.Methods The clinical data of 220 children with respiratory tract infections admitted to the Chengdu Longquanyi District Maternal and Child Health Hospital from January 2018 to December 2022 were analyzed retrospectively.Serum MP antibodies were detected by immunofluorescence assay.The relationship between epidemiological characteristics such as infection year,age,gender,region,infection type and infection season and the positive rate of MP infection was analyzed.Results Among the 220 children with respiratory tract infections,48 children were positive for MP,with a positive rate of 21.82%.The positive rate of MP in children with respiratory tract infections in 2022 was 9.76%,lower than 31.03%in 2018,the difference was statistically significant(c2=0.012,P<0.05).There was no significant difference in the positive rate of MP among children with respiratory tract infections in other years(P>0.05).The positive rate of MP in children aged 4-<8 with respiratory tract infection was 51.85%,higher than that in children under 1 year old,children aged 1-<4 years old and children aged 8-13 years old,the differences were statistically significant(c2=31.511,10.580,21.518;all P<0.05).The positive rate of MP in children with respiratory tract infections in urban areas was 26.09%,higher than 10.17%in rural areas,the difference was statistically significant(c2=0.011,P<0.05).The positive rate of MP in children with respiratory tract infections in winter was 38.98%,higher than that in spring,summer,or autumn,the differences were statistically significant(c2=9.789,8.900,4.890;all P<0.05).There were no significant differences in the positive rate of MP infection among spring,summer,and autumn(P>0.05).Conclusions MP infection in children with respiratory tract infections in the past 5 years was closely related to the epidemiological characteristics such as age,region and infection season,but it was not related to gender and infection type.School-age children(4-<8 years old)were the susceptible population.MP infection was more likely to occur in urban areas and winter.
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