Detection and Characterization of Goose Astrovirus Infections in Hatcheries and Commercial Goose Flocks

Table 1

Detection of serum neutralizing antibody against GoAstV in goslings.

Collection date	Location	No. tested	No. positive	Positive rate (%)	Antibody titer
May. 2017	Shandong	132	55	41.7	1 : 27–1 : 741
Dec. 2019	Shandong	108	48	44.4	1 : 137–1 : 562
Sept. 2021	Shandong	92	49	53.2	1 : 112–1 : 676
Dec. 2021	Anhui	180	110	61.1	1 : 27–1 : 501