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Clinical and molecular characteristics of community-acquired methicillin-resistant Staphylococcus aureus infections in Chinese neonates

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机构: [1]Capital Med Univ, Beijing Childrens Hosp, Beijing 100045, Peoples R China; [2]Shenzhen Childrens Hosp, Shenzhen, Peoples R China; [3]Jiangxi Childrens Hosp, Nanchang, Jiangxi, Peoples R China; [4]Guilin Med Coll, Affiliated Hosp, Guilin, Peoples R China; [5]Tsinghua Univ, Hosp 1, Hua Xin Hosp, Beijing 100084, Peoples R China; [6]Nanfang Hosp, Guangzhou, Guangdong, Peoples R China; [7]Capital Med Univ, Beijing Childrens Hosp, 56 Nan Li Shi Rd, Beijing 100045, Peoples R China
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关键词: Community-acquired methicillin-resistant Staphylococcus aureus neonate invasive infection

摘要:
This study aims to characterize the clinical features of community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) infections in Chinese neonates, as well as the molecular characteristics and expression of key virulence genes of isolates. Clinical information and molecular characteristics of 130 cases were analyzed. Up to 83.8% patients were affected with late-onset infection. Cesarean delivery was the main delivery route, accounting for 74.6% of the total deliveries. Pneumonia (69, 53.1%) was the most common infection. A total of 38 patients (29.2%) suffered from complications. Moreover, 35 cases (26.9%) were invasive infections, among which 88.6% involved multiple organs and 45.7% suffered from complications. Cesarean section and premature birth were the risk factors for invasive CA-MRSA infection. ST59-MRSA-SCCmecIVa-t437 (54, 41.5%) was the most predominant CA-MRSA clone. The hla expression in the ST59 isolates was higher than that in ST910 (p=0.02) and the hla expression in ST59-SCCmecV-t437 was higher than that in ST59-SCCmecIVa-t437. Approximately, 46.4% (13/28) of the infections caused by ST59-SCCmecV were invasive. This value is higher than that of ST59-SCCmecVa caused infections (14/59, 23.7%) (p=0.03). This study showed that neonatal CA-MRSA infections in China readily become invasive, involve multiple organs, and are often accompanied by complications. The SCCmec V clone may be more pathogenic than the SCCmecVIa clone.

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出版当年[2014]版:
大类 | 4 区 医学
小类 | 3 区 病理学 4 区 免疫学 4 区 微生物学
最新[2023]版:
大类 | 4 区 医学
小类 | 3 区 病理学 4 区 免疫学 4 区 微生物学
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出版当年[2013]版:
Q3 PATHOLOGY Q3 MICROBIOLOGY Q4 IMMUNOLOGY
最新[2023]版:
Q3 MICROBIOLOGY Q3 PATHOLOGY Q4 IMMUNOLOGY

影响因子: 最新[2023版] 最新五年平均 出版当年[2013版] 出版当年五年平均 出版前一年[2012版] 出版后一年[2014版]

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第一作者机构: [1]Capital Med Univ, Beijing Childrens Hosp, Beijing 100045, Peoples R China;
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通讯机构: [1]Capital Med Univ, Beijing Childrens Hosp, Beijing 100045, Peoples R China; [7]Capital Med Univ, Beijing Childrens Hosp, 56 Nan Li Shi Rd, Beijing 100045, Peoples R China
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