Mycoplasma Infection Rate and Macrolides Resistance in Children With Acute Respiratory Tract Infection

Multi-center Investigation and Study of Mycoplasma Pneumoniae Infection and Macrolide Drug Resistance in Outpatient and In-hospital Pediatric Acute Respiratory Diseases Illness in China

In recent years, mycoplasma pneumoniae caused more than 30% of respiratory infections in children in China, among which the detection rate of drug-resistant mycoplasma pneumoniae was higher than 90%. Pediatricians are facing great challenges.

In this study, a total of 2312 clinical cases were expected to be collected, including 1160 cases of outpatient respiratory infection including common cold, acute bronchitis and cough after infection, and 1152 cases of hospitalized community-acquired pneumonia, through uniform enrollment in 11 multi-centers for 1 year. Clinical data and respiratory samples were collected and clinical follow-up was completed.To investigate the infection rate and drug resistance gene of mycoplasma pneumoniae in children's respiratory tract infection.To evaluate the effectiveness of azithromycin in the treatment of mycoplasma pneumoniae respiratory infection.The early prediction model of refractory mycoplasma pneumoniae was established.To explore the clinical value of colloidal gold in early diagnosis of mycoplasma pneumoniae infection

This research center is a cross-sectional investigation and study, 8 centers including Shanghai children's medical center recruit the outpatient respiratory infection cases into the group, 6 centers including Shanghai children's medical recruit children with community-acquired pneumonia in hospital into the group All of the above cases in the group relevant clinical datas are collected, and complete clinical follow-up.Pharyngeal swabs or sputum specimens collected during the study were sent to Shanghai children's medical center for the detection of MP and macrolidene drug resistance genes.

Azithromycin was administered orally or intravenously to outpatients who tested positive for mycoplasma pneumoniae by colloidal gold method.Finally, MP infection rate of children with respiratory diseases including outpatient (common cold, acute bronchitis and cough after infection) and hospitalization (community-acquired pneumonia) was statistically observed.The detection rate of MP macrolides drug resistance gene was isolated from respiratory disease cases.Sensitivity and specificity of MP rapid detection method (antigen and antibody detection rapid colloidal gold method) for diagnosis of MP infection;Effectiveness of azithromycin in treatment of MRMP infection.

Inclusion Criteria:

A) age: over 28 days, under 18 years old; B) diagnosis: outpatient diagnosis of common cold, acute bronchitis or post-infection cough and hospitalization cases consistent with community-acquired pneumonia.

C) the guardian of the child (< 8 years old) or the child (≥8 years old) can understand and be willing to participate in this study and sign a written informed consent.

Exclusion Criteria:

A)It is necessary to exclude underlying diseases associated with cardiovascular system, digestive system, nervous system, endocrine system, urinary system, immune system and genetic or chromosomal abnormalities.

B) the children or their families refused to participate in the study.