Keqiang Wang1, Wen Xi1, Donghong Yang1, Yali Zheng1, Yaqiong Zhang2, Yusheng Chen3, Chunliang Yan4, Guizhen Tian5, Shuchang An6, Xiangxin Li7, Fucheng An8, Juan Du9, Ke Hu10, Jie Cao11, Lili Ren12, Fang Huang13, Zhancheng Gao1. 1. Department of Respiratory and Critical Care Medicine, Peking University People's Hospital, Beijing 100044, China. 2. Department of Respiratory and Critical Care Medicine, Peking University International Hospital, Beijing 102206, China. 3. Department of Respiratory Medicine, Fujian Provincial Hospital, Fuzhou 350001, China. 4. Department of Respiratory Medicine, Beijing Aerospace General Hospital, Beijing 100076, China. 5. Department of Respiratory Medicine, 263 Hospital of the Chinese People's Liberation Army, Beijing 101149, China. 6. Department of Respiratory Medicine, The First Hospital of Tsinghua University, Beijing 100016, China. 7. Department of Respiratory Medicine, Beijing Changping Hospital, Beijing 102200, China. 8. Department of Respiratory Medicine, Beijing Mentougou District Hospital, Beijing 102300, China. 9. Department of Respiratory Medicine, The Affiliated Hospital of Guiyang Medical College, Guiyang 550004, China. 10. Department of Respiratory Medicine, Renmin Hospital of Wuhan University, Wuhan 430060, China. 11. Department of Respiratory Medicine, Tianjin Medical University General Hospital, Tianjin 300052, China. 12. National Institute for Viral Disease Control and Prevention, China CDC, Beijing 100052, China. 13. Beijing Center for Disease Prevention and Control, Beijing 100013, China.
Abstract
BACKGROUND: Human rhinovirus (HRV) is one of the most common viral etiologies detected in community-acquired pneumonia (CAP) adult cases. However, few is known about the characteristics of HRV-associated CAP. To describe the clinical features of HRV-associated CAP in immunocompetent adults admitted to multiple medical centers in mainland China over a 2-year period. METHODS: A total of 383 patients admitted to hospitals for CAP were enrolled from 46 medical centers in mainland China between January 2013 and December 2014. Multiplex real-time polymerase chain reaction (RT-PCR) assays for viral detection and DNA-based quantitative loop-mediated isothermal amplification (qLAMP) assays for bacterial detection were implemented to all lower respiratory tract specimens obtained from the patients. Twenty-eight cases (28/383, 7.3%) revealed HRV-positive PCR results. Patients with bronchoalveolar lavage (BAL) HRV-positive PCR results (n=20) were further enrolled and divided into two groups depending on the status of bacterial co-infection (viral group, n=12; viral-Bacterial group, n=8). Demographic, clinical and microbiological data were reviewed and compared in detail. RESULTS: Cases with HRV-infection were remarkably correlated with respiratory failure (14/20) and most of them (13/14) received mechanical ventilation. Fever (17/20), productive cough (15/20) and dyspnea (6/20) were common symptoms while flu-like symptoms were rarely observed in the cohort. Streptococcus pneumoniae (3/8), Klebsiella pneumoniae (3/8) and Mycoplasma pneumoniae (2/8) were most frequently identified bacterium in the viral-bacterial group. Compared with the viral group, higher incidence of septic shock (3/8 vs. 1/12, P=0.255), longer ICU length of stay (LOS) (10.0 vs. 6.5 days, P=0.686), longer hospital LOS (18.5 vs. 13.0 days, P=0.208) and higher 28-day mortality (2/8 vs. 2/12, P=1) were observed in the Viral-Bacterial group, although without statistically significant difference. CONCLUSIONS: HRV is a common etiology in CAP among China adults, especially in severe CAP. Clinicians should be vigilant considering of the poor outcome. Highly qualified multiplex PCR techniques with invasive sampling are needed to increase the detection rate.
BACKGROUND: Human rhinovirus (HRV) is one of the most common viral etiologies detected in community-acquired pneumonia (CAP) adult cases. However, few is known about the characteristics of HRV-associated CAP. To describe the clinical features of HRV-associated CAP in immunocompetent adults admitted to multiple medical centers in mainland China over a 2-year period. METHODS: A total of 383 patients admitted to hospitals for CAP were enrolled from 46 medical centers in mainland China between January 2013 and December 2014. Multiplex real-time polymerase chain reaction (RT-PCR) assays for viral detection and DNA-based quantitative loop-mediated isothermal amplification (qLAMP) assays for bacterial detection were implemented to all lower respiratory tract specimens obtained from the patients. Twenty-eight cases (28/383, 7.3%) revealed HRV-positive PCR results. Patients with bronchoalveolar lavage (BAL) HRV-positive PCR results (n=20) were further enrolled and divided into two groups depending on the status of bacterial co-infection (viral group, n=12; viral-Bacterial group, n=8). Demographic, clinical and microbiological data were reviewed and compared in detail. RESULTS: Cases with HRV-infection were remarkably correlated with respiratory failure (14/20) and most of them (13/14) received mechanical ventilation. Fever (17/20), productive cough (15/20) and dyspnea (6/20) were common symptoms while flu-like symptoms were rarely observed in the cohort. Streptococcus pneumoniae (3/8), Klebsiella pneumoniae (3/8) and Mycoplasma pneumoniae (2/8) were most frequently identified bacterium in the viral-bacterial group. Compared with the viral group, higher incidence of septic shock (3/8 vs. 1/12, P=0.255), longer ICU length of stay (LOS) (10.0 vs. 6.5 days, P=0.686), longer hospital LOS (18.5 vs. 13.0 days, P=0.208) and higher 28-day mortality (2/8 vs. 2/12, P=1) were observed in the Viral-Bacterial group, although without statistically significant difference. CONCLUSIONS: HRV is a common etiology in CAP among China adults, especially in severe CAP. Clinicians should be vigilant considering of the poor outcome. Highly qualified multiplex PCR techniques with invasive sampling are needed to increase the detection rate.
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