Key result
Chicken astrovirus shows widespread prevalence, with antibodies detected in ~78% of UK broiler flocks.
Why the study?
Two genetically different chicken astrovirus isolates with low antigenic relatedness were recently identified, prompting investigation of their seroprevalence in broiler chicken production flocks.
Population
Four generations of broiler chicken flocks and turkey breeder flocks from the UK and other European countries
Comparison
Antibody detection for CAstV612 versus CAstV11672 isolates
Design
Cross-sectional seroprevalence study using separate indirect immunofluorescence tests
Authors
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Widespread CAstV exposure in UK broilers supports surveillance; cross-sectional data leaves open clinical or economic impact.
Cross-Sectional
Yes
Chicken astrovirus infections are highly prevalent in UK broiler and parent flocks, with lower prevalence in older generations and turkeys.
Todd et al. (2009) conducted a cross-sectional in Chicken astrovirus (CAstV) infection. Chicken astrovirus (CAstV) exposure was evaluated on Seroprevalence of CAstV antibodies (CAstV612 and CAstV11672). Chicken astrovirus infections were widespread, with antibodies detected in 78% of UK broiler flocks and 53% of parent flocks, showing higher seropositivity for CAstV612 than CAstV11672.