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. 2023 Jul;29(7):1367–1375. doi: 10.3201/eid2907.221149

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Emerging Infectious Diseases is a publication of the U.S. Government. This publication is in the public domain and is therefore without copyright. All text from this work may be reprinted freely. Use of these materials should be properly cited.

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Formation of 2 representatives of avian influenza (H5N1) virus from China. Viral particles are represented by colored ovals containing horizontal bars representing the 8 gene segments (from top to bottom: PB2, PB1, PA, HA, NP, NA, M, and NS). Gene segments of the reassortants are colored according to their corresponding source virus. HA, hemagglutinin; LPAIV, low pathogenicity avian influenza virus; M, matrix; NA, neuraminidase; NP, nucleoprotein; NS, nonstructural protein; PA, polymerase acidic; PB, polymerase basic.