TY - JOUR
T1 - Widespread detection and characterization of porcine parainfluenza virus 1 in pigs in the USA
AU - Palinski, Rachel M.
AU - Chen, Zhenhai
AU - Henningson, Jamie N.
AU - Lang, Yuekun
AU - Rowland, Raymond R.R.
AU - Fang, Ying
AU - Prickett, John
AU - Gauger, Phillip C.
AU - Hause, Ben M.
N1 - Publisher Copyright:
© 2016 The Authors.
PY - 2016/2
Y1 - 2016/2
N2 - Porcine parainfluenza virus 1 (PPIV1) was first identified in 2013 in slaughterhouse pigs in Hong Kong, China. Here, two near-complete genomes were assembled from swine exhibiting acute respiratory disease that were 90.0-95.3 % identical to Chinese PPIV1. Analysis of the HN gene from ten additional PPIV1-positive samples found 85.0-95.5 % identity, suggesting genetic diversity between strains. Molecular analysis identified 17 out of 279 (6.1 %) positive samples from pigs with respiratory disease. Eleven nursery pigs from a naturally infected herd were asymptomatic; however, nasal swabs from six pigs and the lungs of a single pig were quantitative reverse transcriptase (qRT)-PCR positive. Histopathology identified PPIV1 RNA in the nasal respiratory epithelium and trachea. Two serological assays demonstrated seroconversion of infected pigs and further analysis of 59 swine serum samples found 52.5 % and 66.1 % seropositivity, respectively. Taken together, the results confirm the widespread presence of PPIV1 in the US swine herd.
AB - Porcine parainfluenza virus 1 (PPIV1) was first identified in 2013 in slaughterhouse pigs in Hong Kong, China. Here, two near-complete genomes were assembled from swine exhibiting acute respiratory disease that were 90.0-95.3 % identical to Chinese PPIV1. Analysis of the HN gene from ten additional PPIV1-positive samples found 85.0-95.5 % identity, suggesting genetic diversity between strains. Molecular analysis identified 17 out of 279 (6.1 %) positive samples from pigs with respiratory disease. Eleven nursery pigs from a naturally infected herd were asymptomatic; however, nasal swabs from six pigs and the lungs of a single pig were quantitative reverse transcriptase (qRT)-PCR positive. Histopathology identified PPIV1 RNA in the nasal respiratory epithelium and trachea. Two serological assays demonstrated seroconversion of infected pigs and further analysis of 59 swine serum samples found 52.5 % and 66.1 % seropositivity, respectively. Taken together, the results confirm the widespread presence of PPIV1 in the US swine herd.
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U2 - 10.1099/jgv.0.000343
DO - 10.1099/jgv.0.000343
M3 - Article
C2 - 26581410
AN - SCOPUS:84959080247
SN - 0022-1317
VL - 97
SP - 281
EP - 286
JO - Journal of General Virology
JF - Journal of General Virology
IS - 2
ER -