1- Swayne DE, Glisson JR, McDougald LR, Nolan LK, Suarez DL, Nair V. Diseases of Poultry. 13th ed. Iowa: Blackwell Publishing Ltd; 2013.
2- OIE. Manual of Diagnostic Tests and Vaccines. Office international des épizooties, 2015.
3- Silim A, Venne D. Comparison of egg-yolk and serum antibody titers to four avian viruses by enzyme-linked immunosorbent assay using paired field samples. Avian Dis. 1989; 33(4): 643-8.
4- Chen H, Deng G, Li Z, Tian G, Li Y, Jiao P, et al. The evolution of H5N1 influenza viruses in ducks in southern China. Proc Natl Acad Sci. 2004; 101(28): 10452-7.
5- Hotta K, Takakuwa H, Le QM, Phuong SL, Murase T, Ono E, et al. Isolation and characterization of H6N1 and H9N2 avian influenza viruses from Ducks in Hanoi, Vietnam. Virus Res. 2012; 163(2): 448-53.
6- Nguyen T, Rivailler P, Davis CT, Balish A, Dang NH, Jones J, et al. Evolution of highly pathogenic avian influenza (H5N1) virus populations in Vietnam between 2007 and 2010. Virology. 2012; 432(2): 405-16.
7- Nomura N, Sakoda Y, Endo M, Yoshida H, Yamamoto N, Okamatsu M, et al. Characterization of avian influenza viruses isolated from domestic ducks in Vietnam in 2009 and 2010. Arch Virol. 2012; 157(2): 247-57.
8- Hotta K, Takakuwa H, Yabuta T, Ung TT, Usui T, Nguyen HL, et al. Antibody survey on avian influenza viruses using egg yolks of ducks in Hanoi between 2010 and 2012. Vet Microbiol. 2013; 166(1-2): 179-83.
9- Qi Y, Wang H, Guo W, Liu C, Zhao L, Gu Y, et al. Surveillance of multiple subtype specific antibodies against avian influenza viruses among egg yolk in wild ducks from northeast China, 2017–2019. Microb Pathog. 2021; 152: 104618.
10- Carter DL, Link P, Tan G, Stallknecht DE, Poulson RL. Influenza A Viruses in Whistling Ducks (Subfamily Dendrocygninae). Viruses. 2021; 13(2): 192..
11- Yeo S, Nagy E, Krell PJ. Indirect method for prediction of hemagglutination inhibition antibody titers to Newcastle disease virus in chickens by titration of antibodies in egg yolk. J Vet Diag Invest. 2003; 15(2): 184-7.
12- Sá e Silva M, Swayne DE. Serum and egg yolk antibody detection in chickens infected with low pathogenicity avian influenza virus. Avian Dis. 2012; 56(3): 601-4.
13- Härtle S, Magor KE, Göbel TW, Davison F, Kaspers B. Avian immunology. 2nd ed. London: Academic Press. 2014, P: 103-120.
14- Kovacs-Nolan J, Mine Y. Egg yolk antibodies for passive immunity. Annu Rev Food Sci Technol. 2012; 3: 163-82.
15- Larsson A, Bålöw RM, Lindahl TL, Forsberg PO. Chicken antibodies: taking advantage of evolution—a review. Poult Sci. 1993; 72(10): 1807-12.
16- Piela TH, Gulka CM, Yates VJ, Chang PW. Use of egg yolk in serological tests (ELISA and HI) to detect antibody to Newcastle disease, infectious bronchitis, and Mycoplasma gallisepticum. Avian Dis. 1984; 28(4): 877-83.
17- Bar-Joseph M, Malkinson M. Hen egg yolk as a source of antiviral antibodies in the enzymelinked immunosorbent assay (ELISA): a comparison of two plant viruses. J Virol Methods. 1980; 1(3): 179-83.
18- Beck JR, Swayne DE, Davison S, Casavant S, Gutierrez C. Validation of egg yolk antibody testing as a method to determine influenza status in white leghorn hens. Avian Dis. 2003; 47(s3): 1196-9.