Article published the February 8, 2024
Kalen Cookson (Zoetis) Infectious bursal disease virus (IBDV) infections within the first 2 weeks of age cause significant immune suppression while infections after 3 weeks are less severe and more transient. The purpose of this study was to see if a 3-week IBDV challenge could significantly reduce immunity against an infectious bronchitis virus (IBV) challenge given 4 days later ...
Video published on February 7, 2024
Kalen Cookson (Zoetis) talks about immune suppression and vaccination in his research on IBDV and IBV challenges presented at IPPE 2024 in Atlanta, USA.
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Kalen Cookson (Zoetis) explains his work on recombinant vaccine immunity at different times of the challenge, in this interview during IPPE 2023 in Atlanta, USA.
Article published the February 6, 2023
AL2 is the most prevalent IBD virus in U.S. broilers, accounting for as much as half of today’s field isolations. The newest recombinant rHVTIBD vaccine was introduced in 2021. Previous studies in broilers with no IBD maternal antibodies showed this vaccine gave high levels of protection (70-78%) against AL2 challenge by 18-19 days. This paper will present 2 studies conducted to measure AL2 ...
Video published on February 5, 2023
Kalen Cookson (Zoetis) explains his work on recombinant vaccine immunity at different times of the challenge, in this interview during IPPE 2023 in Atlanta, USA.
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February 6, 2023