Frontiers corrects Slovakia Paenibacillus larvae genomics paper

Frontiers in Veterinary Science has issued a correction to a July 2026 paper on the phylogenomics of Paenibacillus larvae, the bacterium that causes American foulbrood in honeybees. Published September 17, 2026, the correction addresses author affiliations and formatting errors in Table 3, and the journal says the original article has been updated. It does not report any change to the study’s data, analysis, or conclusions. (frontiersin.org)

The original paper, published July 8, 2026, examined three ERIC II genotype P. larvae isolates from eastern Slovakia and compared them with genomes from other regions. The authors reported very high similarity among the Slovak isolates, including average nucleotide identity, average amino acid identity, and digital DNA-DNA hybridization values above 99%, alongside low genome-size variability. They argued that these findings, together with broader comparisons, pointed to a possible regional genomic pattern in P. larvae distribution. (frontiersin.org)

The correction itself is specific. Frontiers says the affiliation “Department of Microbiology, Institute of Biology and Ecology, Faculty of Science, Pavol Jozef Safarik University in Kosice, Kosice, Slovakia” had been omitted and has now been added for Jana Kiskova and Peter Pristas. It also says an animal physiology affiliation had been incorrectly included for those two authors and has now been removed. In addition, the notice corrects the wording and order of affiliation 1, and clarifies that the former affiliation 2 should instead appear as affiliation 3 with corrected wording. (frontiersin.org)

Table 3 also received editorial fixes. According to the correction notice, the phrase “genes in category” was mistakenly included in row 3 and should have read “Number of,” “The presence of a plasmid” should have been formatted as a subheading, and a subheading labeled “Number of genes in category” had been omitted between the plasmid rows and the virulence-related rows. The corrected table still presents the same comparative framework for the German DSM25430 strain and the Slovak D3, 5S, and M1 isolates, including genome size, coding sequences, RNAs, prophage regions, phage-related genes, plasmid presence, and functional gene categories. (frontiersin.org)

The underlying study remains relevant because it adds to a growing body of work using whole-genome sequencing to understand P. larvae epidemiology. Earlier Frontiers research on global population structure and outbreak investigation concluded that WGS-based approaches offer higher discriminatory power than older typing methods for tracing P. larvae and investigating American foulbrood spread. A 2023 study of isolates from the Czech Republic and neighboring regions of Slovakia similarly emphasized that detailed genomic analysis can help clarify relationships among strains and transmission patterns across nearby geographies. (frontiersin.org)

Why it matters: For veterinary professionals, especially those working in apiculture, diagnostics, surveillance, or regulatory animal health, this is a reminder to distinguish between substantive scientific corrections and editorial ones. Nothing in the notice suggests the risk picture for American foulbrood has changed. The original paper’s main message still stands: closely related Slovak isolates appeared genomically clustered, mobile genetic elements such as prophage-associated genes and plasmids may contribute to strain variability, and broader sampling is needed to understand transmission and virulence. For readers citing the paper, though, the corrected version matters because affiliation accuracy and table clarity affect attribution, indexing, and interpretation of comparative data. (frontiersin.org)

The honeybee-health context also matters. The original article describes American foulbrood as a highly contagious, fatal disease of honeybees with major ecological and economic consequences, and notes that movement of colonies, hive materials, wax, and other contaminated products can support long-distance spread beyond normal bee flight ranges. That makes genomic surveillance useful not just academically, but operationally, because it can help veterinary and apiary health programs understand whether outbreaks reflect local persistence, regional circulation, or human-mediated movement. (frontiersin.org)

What to watch: The key next development is whether additional genomes from Slovakia and neighboring countries support the paper’s hypothesis of regionalism in P. larvae distribution, and whether future functional work links the observed differences in mobile genetic elements, DNA metabolism genes, or motility-related genes to virulence, persistence, or transmission in the field. (frontiersin.org)