Journal
VIROLOGY JOURNAL
Volume 14, Issue -, Pages -Publisher
BMC
DOI: 10.1186/s12985-017-0817-2
Keywords
Human Malawi polyomavirus (MWPyV); TaqMan real-time PCR; Nasopharyngeal aspirate; Feces; Respiratory virus
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Funding
- National Major Science & Technology Project for Control and Prevention of Major Infectious Diseases of China [2017ZX10103002]
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Background: Human Malawi polyomavirus (MWPyV) was discovered in 2012, but its prevalence and clinical characteristics are largely unknown. Methods: We used real-time TaqMan-based PCR to detect MWPyV in the feces (n = 174) of children with diarrhea, nasopharyngeal aspirates (n = 887) from children with respiratory infections, and sera (n = 200) from healthy adults, and analyzed its clinical characteristics statistically. All the MWPyV-positive specimens were also screened for other common respiratory viruses. Results: Sixteen specimens were positive for MWPyV, including 13 (1.47%) respiratory samples and three (1.7%) fecal samples. The samples were all co-infected with other respiratory viruses, most commonly with influenza viruses (69.2%) and human coronaviruses (30.7%). The MWPyV-positive children were diagnosed with bronchopneumonia or viral diarrhea. They ranged in age from 12 days to 9 years, and the most frequent symptoms were cough and fever. Conclusions: Real-time PCR is an effective tool for the detection of MWPyV in different types of samples. MWPyV infection mainly occurs in young children, and fecal-oral transmission is a possible route of its transmission.
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