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NCBI PD link for serovar Infantis: https://www.ncbi.nlm.nih.gov/pathogens/isolates/#(taxgroup_name:%22Salmonella%20enterica%22)%20AND%20computed_types:(%22serotype=Infantis%22)

Animal reservoir: The main animal reservoirs of serovar Infantis are poultry and swine. In Europe, layer and broiler farms are the major sources of S. Infantis. It has also been found in dogs.Geographical distribution: S. Infantis is widely distributed and a common serovar in a number of countries. In the U.S. and Europe, it ranks among the top ten serovars. S. Infantis has been reported in North America (U.S. and Canada), South America (Argentina, Brazil), Oceania (Australia and New Zealand), Europe (The Netherlands, Finland, Hungary, and Russia), and Asia (Japan).

Genetic characteristics: 

Animal reservoir: The main animal reservoir of serovar Infantis is poultry; however, at least one of Infantis clade is associated with swine. 

Geographical distribution: Serovar Infantis is distributed globally and is a common serovar in a number of countries. 

Outbreaks: Numerous outbreaks linked to poultry have been reported mainly in the US and Canada. Here are some examples.Outbreaks: Outbreaks linked to poultry and pet food have been reported in the U.S. and Canada.

*This outbreak included multiple serovars

^1a Multiple serovars, including Salmonella Altona, Cerro, Enteritidis, Indiana, Infantis, Johannesburg, Mbandaka, and Typhimurium, were linked to this outbreak. The case number represents the total number of cases associated with the outbreak and does not specifically indicate the number of people infected by Salmonella Infantis.

² This outbreak involved both Salmonella Newport (3 cases) and Infantis (1 case).

³ Salmonella Infantis, Lille, Newport, and Mbandaka were reported from 30 states.

⁴ SalmonellaInfantis, Newport, and Lille were reported from 27 states.

Border rejections: Multiple border rejections linked to serovar Infantis have been reported. Majority of them are associated with poultry. Here are some examples.

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Relevant links:

1. https://journals.asm.org/doi/10.1128/mbio.01913-24
2. https://www.sciencedirect.com/science/article/pii/S0168160523002131
3. https://www.cdc.gov/salmonella/outbreaks/backyardpoultry-05-24/investigation.html
4. https://archive.cdc.gov/#/details?url=https://www.cdc.gov/salmonella/infantis-10-18/index.html
5. http://medbox.iiab.me/modules/en-cdc/www.cdc.gov/salmonella/newport-09-17/index.html
6. https://pmc.ncbi.nlm.nih.gov/articles/PMC9150579/
7. https://pmc.ncbi.nlm.nih.gov/articles/PMC5779341/
8. https://archive.cdc.gov/www_cdc_gov/salmonella/dog-food-05-12/index.html
9. https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6211a5.htm#:~:text=Initial%20investigations%20indicated%20many%20of%20the%20ill,live%20poultry%20(e.g.%2C%20chicks%20and%20ducklings)%20from
10. https://www.accessdata.fda.gov/cms_ia/importalert_218.html
11. https://webgate.ec.europa.eu/rasff-window/screen/notification/731338
12. https://webgate.ec.europa.eu/rasff-window/screen/notification/641450
13. https://webgate.ec.europa.eu/rasff-window/screen/notification/446128
14. https://webgate.ec.europa.eu/rasff-window/screen/notification/429768
15. https://webgate.ec.europa.eu/rasff-window/screen/notification/646586
16. https://www.foodsafetynews.com/2023/10/czech-officials-find-salmonella-in-chicken-from-brazil-11-tons-recalled/
17. https://www.fsis.usda.gov/recalls-alerts/fratelli-beretta-usa-inc.-recalls-ready-eat-uncured-antipasto-meat-products-due
18. https://webgate.ec.europa.eu/rasff-window/screen/notification/483014
19. http://www.cdc.gov/salmonella/dog-food-05-12/
20. http://www.cdc.gov/salmonella/live-poultry-04-13/index.html
21. http://lohmann-information.com/content/l_i_45_artikel15.pdf
22. http://www.ncbi.nlm.nih.gov/pubmed/22564450
23. http://www.ncbi.nlm.nih.gov/pubmed/21821397
24. http://analytics.foodtrack.net/cgi-bin/read?rid=MjAxOTAyMjExMzQ0Rk9PRFRSQ0tCVUxMRVRTXzAyMjExOUw0MjY=&style=html&source=email
25. https://www.cdc.gov/salmonella/backyardpoultry-05-24/index.html
26. https://doi.org/10.1111/zph.13174