ArticleVirulence2026
Coinfection with fowl adenovirus serotypes 1 and 4 (FAdV-1 and -4) enhances FAdV-4 replication through FAdV-1-mediated upregulation of HSPA2 expression.
Article in Virulence, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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11 authors.
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Abstract
Fowl adenoviruses (FAdVs) are widely distributed in poultry populations around the world, and many diseases are associated with FAdV infection in chickens. This study documented the first characterization of coinfection with fowl adenovirus serotypes 1 and 4 (FAdV-1 and -4) associated with hydropericardium hepatitis syndrome (HHS) in Chinese layer flocks, revealing a novel viral cooperation mechanism. Two novel strains (CH/SX/201805-1 and -4) were identified and isolated, with whole-genome sequencing showing CH/SX/201805-1 clustering with FAdV-1 (99.7% identity to FAdV-A-61/11z), whereas CH/SX/201805-4 displayed characteristic ORF19/27/29 deletions mirroring emergent Chinese FAdV-4 variants. Experimental coinfection in SPF chickens resulted in 87.5% mortality, which was 16.7% greater than that resulting from infection alone, with exacerbated pathology. In vitro coinfection experiments demonstrated concurrent viral replication within same LMH cells, a previously unreported phenomenon, where FAdV-1 increased FAdV-4 replication efficiency 21-fold (
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