ABSTRACT
Objective@#To analyze the prevalence of latent infection of pathogens of hand,foot and mouth disease (HFMD) in Chinese healthy population and its influencing factors,so as to provide reference for the prevention and control of HFMD.@*Methods @#Literature on the latent infection of HFMD was searched in Chinese and English databases,such as CNKI,Wanfang,CBMd,PubMed,Web of Science and ScienceDirect,from January 1,2000 to December 31,2019. The pooled rate and its 95% confidence interval(95%CI)were used to assess the latent infection rate of HFMD pathogens in healthy Chinese population.@*Results@#A total of 442 articles were retrieved,and 31 articles were finally included in the quantitative meta-analysis. The results showed that the latent infection rate of human enteroviruses in healthy Chinese population was 18.8%(95%CI:16.1%-21.6%),and the latent infection rates of EV71,CV-A16 and other HEVs were 3.7%(95%CI:2.5%-4.9%),1.9%(95%CI:1.0%-2.9%) and 15.1%(95%CI:11.9%-18.3%),respectively. The latent infection rates of HEVs in healthy men and women in China were 16.7%(95%CI:12.9%-20.4%) and 14.4%(95%CI:10.8%-18.0%),respectively. The latent infection rates of human enterovirues HEVs in the healthy population aged 0-5 years and over 5 years were 24.4%(95%CI:20.4%-28.5%) and 9.4%(95%CI:6.5%-12.2%),respectively. Meta regression analysis showed that the associated factors for the latent infection rate of HEVs in Chinese healthy population included sampling period,sampling area and study population.Sensitivity analysis showed that there was no significant change on meta results after the exclusion of individual studies one by one(p>0.05). Begg's tests,Egger's tests and funnel plots all indicated the existence of publication bias. Trim and fill method showed that the recessive infection rate was reduced after adjustment(p<0.05). @*Conclusions@#The latent infection rate of HFMD pathogens is high in healthy people in China,and it is mainly caused by other HEVs. Males and children aged under 5 years are at high risk of latent infection of HEVs.
ABSTRACT
Objective To investigate the early diagnostic value of bronchoalveolar lavage for pulmonary aspergillosis in non-immunocompromised patients. The GM absorbances of recycled bronchoalveolar lavage fluid in different orders were compared, in order to estabilsh a uniform of broncholaveolar lavage in GM test. Methods We mainly focused on the patients (84 cases) confirmed as pulmonary infection by HRCT chest imageological examination from January 2016 to February 2017. They underwent the bronchoalveolar lavage before empirical or pathogenic antifungal therapy. Meanwhile, the lavage was collected in order of the first and the second tube. Then, BALF-GM test was performed. The GM absorbance (A) and I value of bronchoalveolar lavage fluid were detected by ELISA method. The GM test result of the first tube of bronchoalveolar lavage fluid was included into GM1 group and the GM test result of the second tube of bronchoalveolar lavage fluid was included into GM2 group. According to the standards, the patients were divided into case group (proven 2 cases, probable 7 cases, possible 13 cases) and non-IPA group (62 cases). The GM test diagnostic efficiency of bronchoalveolar lavage fluid collected in different orders were statistically analyzed between the case group and control group. Results The GM-I values showed significant difference between GM1 and GM2 groups (Z = -3.98, P = 0.000). the average rank I value of BALF-GM1 (1.78 ± 1.71) was significantly higher than the BALF-GM2. According to the ROC curve, the optimal cut-off of BALF-GM1 was 0.6, the sensitivity was 86.36％, the specificity was 93.55％, the positive predictive value was 82.61％ and the negative predictive value was 95.08％. The area under the curve of BALF- GM1 (0.941) was significantly higher than that of BALF-GM2 (0.798), indicating that the diagnostic efficiency of BALF-GM1 was higher. Conclusion The operation sequence of collecting bronchoalveolar lavage could affect the I value of BALF-GM test. The diagnostic efficiency of BALF-GM test result of the first tube of bronchoalveolar lavage fluid was higher and had the higher application value in the diagnosis of pulmonary aspergillosis.