A review published online 10 October 2026 in The Veterinary Journal consolidates current knowledge on turkey coronavirus (TCoV), singling out transmission biology and pathogenesis as the field's most persistent blind spots. Authors Biswash Ghimire, Abhijith Anil, Menuka Bhandari, and Kush Kumar Yadav argue that unresolved questions in these two areas continue to limit outbreak control on turkey operations.

The paper is a synthesis, not a new trial. It gathers the existing literature on how the virus moves through flocks and how disease develops once infection is established, then maps where the evidence thins out. That framing matters for practitioners: the gaps the authors identify define where diagnostic and biosecurity decisions currently rest on inference rather than data.

What does the review cover?

The authors organize the synthesis around two linked questions:

• Transmission biology — routes by which turkey coronavirus spreads within and between flocks, and the evidence quality supporting each route.
• Pathogenesis — how the virus produces disease in turkeys, from tissue tropism through clinical outcome.

Across both sections, the paper distinguishes findings that are well replicated from those resting on limited or dated studies, and it closes by proposing directions for future research aimed at closing the most consequential gaps.

Why does it matter at the farm level?

Turkey coronavirus is a production disease, not a regulatory one. The review does not introduce new drugs, vaccines, or agency actions; no FDA CVM, EMA, or USDA determinations appear in the source material. Its practical weight lies elsewhere.

For food-animal veterinarians, a consolidated account of transmission routes feeds directly into biosecurity planning: which pathways justify intervention, and which remain speculative. For diagnosticians, an explicit accounting of pathogenesis gaps clarifies why certain clinical presentations may be interpreted differently across labs. And for researchers and industry, the "future directions" section functions as a prioritized agenda — a shortlist of the studies the authors judge most likely to change practice.

The review carries no companion-animal implications, and the source does not assert any public-health relevance; its scope is confined to turkeys.

The takeaway

Peer-reviewed syntheses like this one rarely change protocols overnight, but they set the terms for the next round of primary studies. With transmission biology and pathogenesis flagged as the critical gaps, expect follow-up work — and eventually flock-level guidance — to build on the framework these authors lay out.