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Volume 25, Number 10—October 2019
Dispatch

Bidirectional Human–Swine Transmission of Seasonal Influenza A(H1N1)pdm09 Virus in Pig Herd, France, 2018

Amélie Chastagner1, Vincent Enouf1, David Peroz, Séverine Hervé, Pierrick Lucas, Stéphane Quéguiner, Stéphane Gorin, Véronique Beven, Sylvie Behillil, Philippe Leneveu, Emmanuel Garin, Yannick Blanchard, Sylvie van der Werf, and Gaëlle SimonComments to Author 
Author affiliations: French Agency for Food, Environmental and Occupational Health, and Safety, Ploufragan, France (A. Chastagner, S. Hervé, P. Lucas, S. Quéguiner, S. Gorin, V. Beven, Y. Blanchard, G. Simon); Institut Pasteur, Paris, France (V. Enouf, S. Behillil, S. van der Werf); Atlantic Vétérinaires, Ancenis, France (D. Peroz); CEVA Santé Animale SA, Libourne, France (P. Leneveu); Coop de France, Paris (E. Garin); Plateforme Epidémiosurveillance Santé Animale, Lyon, France (E. Garin)

Main Article

Table

Influenza A(H1N1)pdm09 strains closest related to A/sw/France/53-180028/2018 isolated from a sow in France, 2018*

Influenza A(H1N1)pdm09 strain† Collection date Percentage identity
Segment no. (gene)
 Whole genome
1 (PB2) 2 (PB1) 3 (PA) 4 (HA) 5 (NP) 6 (NA) 7 (M) 8 (NS)
A/Haute Normandie/1985/2017 2017 Dec 28 99.96 99.91 100.00 99.88 100.00 99.93 100.00 99.77 99.94
A/Dijon/181/2018 2017 Dec 31 99.96 99.91 99.95 99.82 100.00 99.86 100.00 99.88 99.94
A/Alsace/560/2018 2018 Jan 22 99.91 99.96 100.00 99.82 100.00 99.93 100.00 99.77 99.93
A/Paris/1767/2017 2017 Dec 15 99.96 99.96 99.95 99.76 100.00 100.00 99.90 99.77 99.92

*HA, hemagglutinin; M, matrix; NA, neuraminidase; NP, nucleoprotein; NS, nonstructural protein; PA, polymerase acidic; PB1, polymerase basic 1; PB2, polymerase basic 2.
†Sequences available in GISAID database (https://www.gisaid.org) and selected using integrated BLAST program.

Main Article

1These first authors contributed equally to this article.

Page created: September 17, 2019
Page updated: September 17, 2019
Page reviewed: September 17, 2019
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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