Analysis of infection status and pathogenic features of human metapneumovirus among children in Hangzhou between year 2009 and 2011 / 中华预防医学杂志
Chinese Journal of Preventive Medicine
;
(12): 31-34, 2013.
Article
in Chinese
| WPRIM
| ID: wpr-274767
ABSTRACT
<p><b>OBJECTIVE</b>To study the infection status and pathogenic features of human metapneumovirus (hMPV) among children with acute respiratory tract infection in Hangzhou.</p><p><b>METHODS</b>A total of 372 children less than 14 years old with acute respiratory tract infections were recruited as subjects from the pediatric clinic or intensive care unit (ICU) of 3 hospitals in Hangzhou during November 2009 to January 2010, and November 2010 to January 2011. A total of 372 specimens were collected, including 351 respiratory swab, 9 nasopharyngeal aspirate material, 8 endotracheal aspirate material and 4 sputum. The total nucleic acid was then extracted from the specimens, and the nucleoprotein (N) gene of hMPV was amplified by RT-PCR, whose positive products were sequenced and analyzed. Africa green monkey kidney cells (Vero-E6) were applied to culture hMPV among the positive samples; meanwhile fluorescence quantitative RT-PCR was adopted to test other respiratory virus infection.</p><p><b>RESULTS</b>Out of 372 patients, 42 (11.2%) were positive for N gene of hMPV. The positive rate of hMPV among boys was 11.5% (26/226), and correspondingly 10.9% (16/146) among girls. The difference showed no statistical significance (χ(2) = 0.026, P > 0.05). The youngest patient was only 2 month-old and the eldest patient was 14 years old. The median of the patients' age was 24 months. Fifteen positive samples amplified by RT-PCR were sequenced, and all turned out to be subtype B1; whose similarity to GD165 found in Guangdong was 98.1% - 99.5% and similarity to BJ1897 in Beijing was 87.8% - 89.2%. The co-infection rate between hMPV and other respiratory virus was 45.2% (19/42); most of which was between hMPV and respiratory syncytial virus, whose rate at 26.1% (11/42).</p><p><b>CONCLUSION</b>hMPV was the single genotype relevant with the acute respiratory tract infection disease among children in Hangzhou district; however, the co-infection with other respiratory virus did exist.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Respiratory Tract Infections
/
Virology
/
China
/
Epidemiology
/
Paramyxoviridae Infections
/
Metapneumovirus
/
Genetics
/
Genotype
Limits:
Adolescent
/
Child
/
Child, preschool
/
Female
/
Humans
/
Infant
/
Male
Country/Region as subject:
Asia
Language:
Chinese
Journal:
Chinese Journal of Preventive Medicine
Year:
2013
Type:
Article
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