Volume 26, Number 12—December 2020
Equine-Like H3 Avian Influenza Viruses in Wild Birds, Chile
|Gene segment||Equine-like, no. positive/no. tested†||GTR relaxed||GTR strict||HKY relaxed||HKY strict|
|HA||6/8||1916 (1883–1941)||1918 (1909–1927)||1917 (1886–1939)||1918 (1909–1927)|
|PA||19/26||1948 (1938–1956)||1946 (1941–1950)||1948 (1935–1957)||1946 (1941–1950)|
|NP||24/29||1947 (1936–1955)||1945 (1940–1950)||1947 (1936–1955)||1945 (1939–1949)|
*Estimated divergence dates between these sequences from Chile and the 1963 H3N8 equine influenza sequences were estimated by using BEAST version 1.10 (https://beast.community/2018-06-10_BEAST_v1.10.0_released.html) with GTR or HKY substitution models and strict or uncorrelated relaxed clocks. Estimated dates are reported with 95% credible interval dates in parentheses. Because NS1 sequences did not exhibit molecular clock–like behavior, the divergence date could not be estimated. GTR, generalized time reversible; HA, hemagglutinin; HKY, Hasegawa-Kishino-Yano; NA, not available; NP, nucleoprotein; NS1, nonstructural protein 1; PA, polymerase acidic. †Number of sequences from Chile for the gene segments that have high homology to the 1963 H3N8 equine influenza virus.
1These authors contributed equally to this article.