PloS one, 2019-04, Vol.14 (4), p.e0210847-e0210847
2019
Details
- Autor(en) / Beteiligte
- Titel
- The evolution of a super-swarm of foot-and-mouth disease virus in cattle
- Ist Teil von
- PloS one, 2019-04, Vol.14 (4), p.e0210847-e0210847
- Ort / Verlag
- United States: Public Library of Science
- Erscheinungsjahr
- 2019
- Link zum Volltext
- Quelle
- Electronic Journals Library - Freely accessible e-journals
- Beschreibungen/Notizen
- Foot-and-mouth disease (FMD) is a highly contagious viral disease that severely impacts global food security and is one of the greatest constraints on international trade of animal products. Extensive viral population diversity and rapid, continuous mutation of circulating FMD viruses (FMDVs) pose significant obstacles to the control and ultimate eradication of this important transboundary pathogen. The current study investigated mechanisms contributing to within-host evolution of FMDV in a natural host species (cattle). Specifically, vaccinated and non-vaccinated cattle were infected with FMDV under controlled, experimental conditions and subsequently sampled for up to 35 days to monitor viral genomic changes as related to phases of disease and experimental cohorts. Consensus-level genomic changes across the entire FMDV coding region were characterized through three previously defined stages of infection: early, transitional, and persistent. The overall conclusion was that viral evolution occurred via a combination of two mechanisms: emergence of full-genomic minority haplotypes from within the inoculum super-swarm, and concurrent continuous point mutations. Phylogenetic analysis indicated that individuals were infected with multiple distinct haplogroups that were pre-existent within the ancestral inoculum used to infect all animals. Multiple shifts of dominant viral haplotype took place during the early and transitional phases of infection, whereas few shifts occurred during persistent infection. Overall, this work suggests that the establishment of the carrier state is not associated with specific viral genomic characteristics. These insights into FMDV population dynamics have important implications for virus sampling methodology and molecular epidemiology.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 1932-6203eISSN: 1932-6203DOI: 10.1371/journal.pone.0210847Titel-ID: cdi_plos_journals_2215399408
- Format
- –
- Schlagworte
- 60 APPLIED LIFE SCIENCES, Animal phylogenetics, Animal products, Animals, Beef cattle, Biological evolution, Biological Science, Bovidae, Capsid Proteins - genetics, Carrier State - immunology, Carrier State - veterinary, Carrier State - virology, Cattle, Cattle diseases, Cattle Diseases - immunology, Cattle Diseases - prevention & control, Cattle Diseases - virology, Composition, Development and progression, Diseases, Epidemics, Epidemiology, Evolution, Evolution, Molecular, Evolutionary biology, FMD, Food security, Food supply, Foot & mouth disease, Foot and mouth disease, Foot and mouth disease virus, Foot-and-Mouth Disease - immunology, Foot-and-Mouth Disease - prevention & control, Foot-and-Mouth Disease - virology, Foot-and-Mouth Disease Virus - genetics, Foot-and-Mouth Disease Virus - immunology, Foot-and-Mouth Disease Virus - isolation & purification, Gene mutation, Genetic aspects, Genome, Viral - genetics, Haplotypes, Host-virus relationships, Infections, Inoculum, International trade, Longitudinal Studies, Mutation, Natural history, Persistent infection, Phylogeny, Population biology, RNA, Viral - genetics, Sampling methods, Vaccination, Veterinary diseases, Viral diseases, Viral Vaccines - administration & dosage, Viruses