Genomic Surveillance of E. coli in Australia
Author Information
Author(s): Anne E. Watt, Max L. Cummins, Celeste M. Donato, Wytamma Wirth, Ashleigh F. Porter, Patiyan Andersson, Erica Donner, Vitali Sintchenko, Alicia Arnott, Alireza Zahedi, Rowena Bull, Jessica R. Webb, Danielle Ingle, Kristy Horan, Tuyet Hoang, Angeline Ferdinand, Tehzeeb Zulfiqar, Craig Thompson, Lex E. X. Leong, Bethany Hoye, Glenn F. Browning, Michelle Wille, Rose Wright, Angela Donald, Zoe Bartlett, Avram Levy, Christina Bareja, Tatiana Gonzales, Cara Minney-Smith, Erin Flynn, Aruna Phabmixay, Thy Huynh, Amy V. Jennison, Torsten Seemann, Steven P. Djordjevic, Benjamin P. Howden
Primary Institution: The University of Melbourne
Hypothesis
How can genomic surveillance improve our understanding of E. coli transmission across different sources in a One Health context?
Conclusion
The study identified cross-source genomic clusters of E. coli, highlighting the complex transmission pathways between humans, animals, and the environment.
Supporting Evidence
- 5471 E. coli genome sequences were analyzed from various sources in Australia.
- 10 sequence types were commonly associated with cross-source genomic clusters.
- Assessing genomic relationships at ≤ 100 SNP threshold enabled better detection of cross-source linkages.
Takeaway
Scientists looked at a lot of E. coli samples from people, animals, and the environment to see how they are related and how they spread.
Methodology
The study compiled and analyzed 5471 E. coli genome sequences from various sources in Australia over 36 years.
Potential Biases
Sampling bias due to overrepresentation of certain sequence types and limited spatiotemporal overlap.
Limitations
The dataset had limited metadata and was opportunistically sampled, which may affect the interpretation of transmission events.
Participant Demographics
Samples included 2996 from humans, 870 from wild animals, 649 from livestock, 375 from companion animals, 292 from environmental sources, and 289 from food.
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website