S. Infantis: an emerging serotype that has become a resident?

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Salmonella Infantis (S. Infantis) has apparently come to poultry production to stay…

The great diversity exhibited by Salmonella spp (S.) is one of the most critical characteristics that must be considered for its control. While it is true that more than 1,500 serotypes are now included in subspecies enterica, it has been postulated that perhaps 100 are actually important to public or animal health.

However, these relatively few serotypes present a high challenge for controlling this bacterium in poultry production since there is significant variation in their importance depending on the country, the region, and even the particularities of each company.

The presence of S. Infantis implies a high risk to public health and, occasionally, to birds’ health.

• The diversity of the enterica subspecies makes it difficult to diagnose and establish effective control measures.
• There are many differences between serotypes, both from the point of view of pathogenicity for humans and animals and their adaptation to poultry environments.

Identifying the predominant Salmonella spp serotype in a farm is essential to achieving its control.