Correction updates canine Chagas prevalence review, not findings

A correction in Frontiers in Veterinary Science has updated the publication record for a widely relevant canine Chagas disease review, but not its core epidemiologic conclusions. The correction, published September 16, 2026, concerns the funding statement for the article “Prevalence of Trypanosoma cruzi infection in dogs in the United States: a systematic review and meta-analysis of observational studies (2000–2024)” and adds an author disclaimer that had been omitted from the original version. (frontiersin.org)

The original review, published October 15, 2025, aimed to pull together fragmented U.S. data on canine T. cruzi infection, a topic that has drawn growing attention as Chagas disease becomes better recognized as a domestic, not solely imported, concern. In that paper, the authors framed dogs as both susceptible hosts and potential sentinels for human risk, especially in areas where triatomine vectors are established. (frontiersin.org)

The review included 16 observational studies published between January 1, 2000, and March 31, 2024, representing 4,974 dogs across five states. Its pooled prevalence estimate was 12.5% overall, with marked heterogeneity between studies. By subgroup, pooled prevalence was highest in working dogs at 32%, followed by stray or feral dogs at 23%, residential dogs at 12%, and shelter dogs at 7%. State-level pooled estimates were highest in Louisiana at 18% and Texas at 15%, although Texas contributed most of the available studies and more than half of sampled dogs. (frontiersin.org)

The paper also reported that study year was significantly associated with prevalence, with an estimated 11% increase in odds per year. The authors cautioned that this could reflect a true rise in infection, better detection, improved reporting, or some combination of those factors. They also stressed that evidence remains concentrated in a handful of southern states and is limited by inconsistent study methods. Their conclusion called for standardized diagnostics, clearer dog-type classification, and concurrent vector surveillance. (frontiersin.org)

That broader context matters because canine Chagas disease is already recognized as an underappreciated U.S. issue. CDC materials note that T. cruzi is transmitted by triatomine bugs, which are typically found in the southern United States, and can infect both people and animals. A 2025 CDC Emerging Infectious Diseases review went further, arguing that Chagas disease should be recognized as endemic in the U.S.; it noted that dogs exposed to T. cruzi have been identified in 23 states, plus Washington, DC, and the U.S. Virgin Islands, and described canine disease as a concern in both working and companion dog populations. (cdc.gov)

Expert reaction tied specifically to this correction appears limited so far, which isn’t unusual for a narrowly scoped publishing update. Still, the surrounding literature has been consistent on the bigger message: canine infection is present, surveillance is patchy, and disease burden likely varies by housing, husbandry, geography, and vector exposure. The Frontiers review itself found no significant predictive effect for dog type or state in meta-regression, likely because of sparse and uneven data rather than absence of real-world differences. (frontiersin.org)

Why it matters: For veterinarians, the correction doesn’t alter case recognition or risk assessment, but it does preserve the integrity of a paper that may be cited in surveillance, research, and continuing education. More importantly, the underlying study reinforces that canine Chagas disease should stay on the radar in endemic and potentially underrecognized areas, particularly for working dogs, kennel populations, and dogs with outdoor exposure. For practices, diagnostic labs, and public health partners, the message is less about this correction itself and more about the still-unsettled surveillance picture behind it. (frontiersin.org)

What to watch: Next, watch for whether additional U.S. prevalence studies expand beyond Texas and neighboring states, whether diagnostic approaches become more standardized, and whether veterinary and public health groups push for more formalized animal reporting or integrated vector-animal surveillance. (frontiersin.org)