STAT1 and infection: Moreover, genes such as Ifr9, Ifr8, Ifr7, CSF2RA, STAT1, and STAT2 were expressed to a greater extent in the PmQ infection group than PmCQ2, and Il22, Il6, Nos2, Ccl4, Ccl5, Ifr1, Socs1, and Socs3 were increased only in PmQ infected chickens rather than PmCQ2.