{"id":190186,"date":"2026-03-24T14:57:45","date_gmt":"2026-03-24T13:57:45","guid":{"rendered":"https:\/\/www.ainia.com\/?p=190186"},"modified":"2026-04-02T13:29:02","modified_gmt":"2026-04-02T12:29:02","slug":"what-pathogen-causes-salmonella-prevention-and-control-in-food","status":"publish","type":"post","link":"https:\/\/www.ainia.com\/en\/ainia-news\/what-pathogen-causes-salmonella-prevention-and-control-in-food\/","title":{"rendered":"What pathogen causes salmonella? Prevention and Control in Food"},"content":{"rendered":"<html><body><article>The <strong>salmonella<\/strong> is one of the most common and dangerous bacteria associated with food poisoning outbreaks. This pathogen can be present in a wide variety of foods, and its ability to survive and multiply under variable conditions poses significant challenges in terms of <strong>food safety<\/strong>.<strong>In this article, we will explore:<\/strong>\u00a0\n<nav aria-label=\"Article index\">\n<ul>\n<li><strong><a href=\"#main-species-and-genes-responsible-for-salmonella\">Main species and genes responsible for salmonella<\/a><\/strong><\/li>\n<li><strong><a href=\"#pathogenicity-of-salmonella-in-foods\">Pathogenicity of salmonella in foods<\/a><\/strong><\/li>\n<li><strong><a href=\"#growth-and-reproduction-in-the-food-industry\">Growth and reproduction in the Food Industry<\/a><\/strong><\/li>\n<li><strong><a href=\"#preventing-salmonella-in-foods-control-strategies-and-methods\">Preventing Salmonella in Foods: Control Strategies and Methods<\/a><\/strong><\/li>\n<\/ul>\n<\/nav>\n<section>\n<h2 id=\"main-species-and-genes-responsible-for-salmonella\"><span class=\"TextRun SCXW158951513 BCX8\" lang=\"EN-US\" xml:lang=\"EN-US\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW158951513 BCX8\">W<\/span><span class=\"NormalTextRun SCXW158951513 BCX8\">hat pathogen causes salmonella?<\/span><\/span><span class=\"TextRun SCXW158951513 BCX8\" lang=\"ES-ES\" xml:lang=\"ES-ES\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW158951513 BCX8\">\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW158951513 BCX8\">Species<\/span><span class=\"NormalTextRun SCXW158951513 BCX8\">\u00a0and\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW158951513 BCX8\">the<\/span><span class=\"NormalTextRun SCXW158951513 BCX8\">\u00a0Genes\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW158951513 BCX8\">Responsible<\/span><span class=\"NormalTextRun SCXW158951513 BCX8\">\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW158951513 BCX8\">for<\/span><span class=\"NormalTextRun SCXW158951513 BCX8\">\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW158951513 BCX8\">Infection<\/span><\/span><\/h2>\n<p id=\"main-species-and-genes-responsible-for-salmonella\"><span class=\"TextRun SCXW158951513 BCX8\" lang=\"EN-US\" xml:lang=\"EN-US\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW158951513 BCX8\">W<\/span><span class=\"NormalTextRun SCXW158951513 BCX8\">hat pathogen causes salmonella? <\/span><\/span>Salmonella is a bacterial genus belonging to the <strong>Enterobacteriaceae family<\/strong>, and it is composed of various species and serotypes capable of causing disease in both humans and animals. Although there are more than 2,500 Salmonella serotypes, the most relevant species and strains in terms of public health are Salmonella enterica and, to a lesser extent, Salmonella bongori. This diversity in salmonella species and serotypes means that the bacterium can adapt to different ecological niches, such as the intestines of animals and humans, and contribute to the spread of foodborne infections.<\/p>\n<h3><strong>Salmonella enterica<\/strong><\/h3>\n<p><strong>Salmonella enterica<\/strong> is by far the most relevant species from a pathogenic point of view, as it is responsible for most cases of <strong>salmonellosis<\/strong> in humans. <strong>Salmonella enterica<\/strong> is divided into several serotypes, of which the most common are:<\/p>\n<ul>\n<li><strong>Salmonella Typhimurium:<\/strong> This strain is responsible for acute gastrointestinal infections in humans, especially through contaminated foods such as raw meat, eggs and unpasteurised dairy products. It is one of the most prevalent strains in salmonellosis outbreaks.<\/li>\n<li><strong>Salmonella Enteritidis:<\/strong> Similar to <strong>Typhimurium<\/strong>, <strong>Enteritidis<\/strong> is commonly found in poultry products and contaminated eggs. It is also one of the most frequent causes of food poisoning caused by salmonella.<\/li>\n<li><strong>Salmonella Typhi:<\/strong> This serotype causes typhoid fever, a serious systemic infection that can have fatal consequences if not treated properly. Unlike other strains of <strong>Salmonella enterica<\/strong>, <strong>Typhi<\/strong> is transmitted mainly from person to person through the consumption of contaminated water or food.<\/li>\n<li><strong>Salmonella Paratyphi:<\/strong> It causes a milder form of typhoid fever, called paratyphoid fever, although it can also be serious if not treated in time.<\/li>\n<\/ul>\n<h3><strong>Salmonella bongori<\/strong><\/h3>\n<p>Although <strong>Salmonella bongori<\/strong> belongs to the same genus as <strong>Salmonella enterica<\/strong>, its pathogenic effects are much less common in humans. <strong>S. bongori<\/strong> is generally found in non-animal environments and is not responsible for the main foodborne infections, but is instead associated with some outbreaks in wild animals. This species may be a lesser concern, but it is important for microbiologists and food safety authorities because of its ability to survive under environmentally stressful conditions.<\/p>\n<\/section>\n<section>\n<h2 id=\"pathogenicity-of-salmonella-in-foods\">Pathogenicity of salmonella in foods<\/h2>\n<p>The<strong> pathogenicity of salmonella<\/strong> in foods is related to its ability to survive and multiply in different types of food products. This bacterium can survive in raw foods, such as meats and eggs, but it can also be present in contaminated fruits and vegetables, especially if they have been in contact with wastewater or contaminated fertilisers.<\/p>\n<p>In terms of food safety, salmonella can be especially dangerous because it does not always show visible signs in contaminated foods, which makes its detection difficult without microbiological testing. In addition, some salmonella strains are capable of surviving insufficient cooking temperatures, which increases the risk of infection if foods are not cooked properly.<\/p>\n<\/section>\n<section>\n<h2 id=\"growth-and-reproduction-in-the-food-industry\"><span class=\"NormalTextRun SCXW148695246 BCX8\">Salmonella: <\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW148695246 BCX8\">Growth<\/span><span class=\"NormalTextRun SCXW148695246 BCX8\">\u00a0and\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW148695246 BCX8\">Reproduction<\/span><span class=\"NormalTextRun SCXW148695246 BCX8\">\u00a0in\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW148695246 BCX8\">the<\/span><span class=\"NormalTextRun SCXW148695246 BCX8\">\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW148695246 BCX8\">Food<\/span><span class=\"NormalTextRun SCXW148695246 BCX8\">\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW148695246 BCX8\">Industry<\/span><\/h2>\n<p>The foods most commonly contaminated include:<\/p>\n<ul>\n<li><strong>Raw or undercooked meats<\/strong>, especially <strong>chicken<\/strong>, <strong>beef<\/strong> and <strong>pork<\/strong>.<\/li>\n<li><strong>Raw<\/strong> or undercooked <strong>eggs<\/strong>.<\/li>\n<li><strong>Unpasteurised dairy products<\/strong>.<\/li>\n<li><strong>Contaminated fruits and vegetables<\/strong>, especially if they have been in contact with contaminated water or faecal fertilisers.<\/li>\n<\/ul>\n<p>In the <strong>food industry<\/strong>, salmonella can grow and multiply rapidly under incorrect temperature conditions or if products are not handled properly. Temperature is one of the key factors affecting salmonella growth: it can thrive between<strong> 5\u00b0C and 47\u00b0C<\/strong>, which means foods must be kept at temperatures that prevent bacterial multiplication.<\/p>\n<p>Salmonella can also spread through<strong> cross-contamination<\/strong>, when utensils, surfaces or hands come into contact with contaminated foods and then touch other foods that will not be cooked. This contamination can occur at any stage of the food supply chain, from the producer to the final consumer.<\/p>\n<\/section>\n<section>\n<h2 id=\"preventing-salmonella-in-foods-control-strategies-and-methods\"><img decoding=\"async\" class=\"alignnone wp-image-190174 size-large\" src=\"https:\/\/www.ainia.com\/wp-content\/uploads\/2026\/03\/ChatGPT-Image-26-feb-2026-16_20_46-1-1-1024x1024.jpg\" alt=\"test biohazard on eggs salmonella\" width=\"1024\" height=\"1024\" srcset=\"https:\/\/www.ainia.com\/wp-content\/uploads\/2026\/03\/ChatGPT-Image-26-feb-2026-16_20_46-1-1-1024x1024.jpg 1024w, https:\/\/www.ainia.com\/wp-content\/uploads\/2026\/03\/ChatGPT-Image-26-feb-2026-16_20_46-1-1-300x300.jpg 300w, https:\/\/www.ainia.com\/wp-content\/uploads\/2026\/03\/ChatGPT-Image-26-feb-2026-16_20_46-1-1-150x150.jpg 150w, https:\/\/www.ainia.com\/wp-content\/uploads\/2026\/03\/ChatGPT-Image-26-feb-2026-16_20_46-1-1-768x768.jpg 768w, https:\/\/www.ainia.com\/wp-content\/uploads\/2026\/03\/ChatGPT-Image-26-feb-2026-16_20_46-1-1.jpg 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/h2>\n<h2>Preventing Salmonella in Foods: Control Strategies and Methods<\/h2>\n<p>Preventing <strong>salmonella<\/strong> in foods is a priority for the food industry, and there are several <a href=\"https:\/\/www.ainia.com\/en\/laboratory-services\/microbiological-analysis\/pathogens\/\"><strong>control strategies<\/strong><\/a> that can be implemented to minimise risks. Some of the key strategies include:<\/p>\n<ul>\n<li><strong>Temperature control<\/strong>: Ensuring that foods are cooked at the proper temperatures to kill salmonella, especially meats and eggs.<\/li>\n<li><strong>Proper hygiene<\/strong>: Ensuring that kitchen utensils, work surfaces and equipment are properly disinfected to avoid cross-contamination.<\/li>\n<li><strong>Monitoring and microbiological testing<\/strong>: Carrying out periodic analyses of food products to detect the presence of salmonella before they reach the final consumer.<\/li>\n<li><strong>Staff training<\/strong>: Instructing workers on proper food handling and the importance of hygiene at all stages of production.<\/li>\n<\/ul>\n<p><strong>Effective control of salmonella in foods<\/strong> requires a comprehensive approach that addresses everything from production to consumption, ensuring that each stage of the process is under control to protect consumers.<\/p>\n<p><img decoding=\"async\" class=\"alignnone wp-image-132989 size-large\" src=\"https:\/\/www.ainia.com\/wp-content\/uploads\/2021\/12\/Cabecera_Patogenos-1-1024x683.jpg\" alt=\"Pathogens\" width=\"1024\" height=\"683\" srcset=\"https:\/\/www.ainia.com\/wp-content\/uploads\/2021\/12\/Cabecera_Patogenos-1-1024x683.jpg 1024w, https:\/\/www.ainia.com\/wp-content\/uploads\/2021\/12\/Cabecera_Patogenos-1-300x200.jpg 300w, https:\/\/www.ainia.com\/wp-content\/uploads\/2021\/12\/Cabecera_Patogenos-1-768x512.jpg 768w, https:\/\/www.ainia.com\/wp-content\/uploads\/2021\/12\/Cabecera_Patogenos-1.jpg 1260w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><em><strong><span class=\"TextRun SCXW47957951 BCX8\" lang=\"ES-ES\" xml:lang=\"ES-ES\" data-contrast=\"auto\"><span class=\"NormalTextRun SpellingErrorV2Themed SCXW47957951 BCX8\">Funded<\/span><span class=\"NormalTextRun SCXW47957951 BCX8\">\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW47957951 BCX8\">by<\/span><span class=\"NormalTextRun SCXW47957951 BCX8\">\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW47957951 BCX8\">the<\/span><span class=\"NormalTextRun SCXW47957951 BCX8\">\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW47957951 BCX8\">aid<\/span><span class=\"NormalTextRun SCXW47957951 BCX8\">\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW47957951 BCX8\">program<\/span><span class=\"NormalTextRun SCXW47957951 BCX8\">\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW47957951 BCX8\">for<\/span><span class=\"NormalTextRun SCXW47957951 BCX8\">\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW47957951 BCX8\">hiring<\/span><span class=\"NormalTextRun SCXW47957951 BCX8\">\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW47957951 BCX8\">young<\/span><span class=\"NormalTextRun SCXW47957951 BCX8\">\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW47957951 BCX8\">professionals<\/span><span class=\"NormalTextRun SCXW47957951 BCX8\">\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW47957951 BCX8\">specialized<\/span><span class=\"NormalTextRun SCXW47957951 BCX8\">\u00a0in\u00a0<\/span><span class=\"NormalTextRun SpellingErrorV2Themed SCXW47957951 BCX8\">internationalization<img decoding=\"async\" class=\"alignnone wp-image-191112 size-large\" src=\"https:\/\/www.ainia.com\/wp-content\/uploads\/2026\/02\/Imagen1-1024x109.png\" alt=\"\" width=\"1024\" height=\"109\" srcset=\"https:\/\/www.ainia.com\/wp-content\/uploads\/2026\/02\/Imagen1-1024x109.png 1024w, https:\/\/www.ainia.com\/wp-content\/uploads\/2026\/02\/Imagen1-300x32.png 300w, https:\/\/www.ainia.com\/wp-content\/uploads\/2026\/02\/Imagen1-768x82.png 768w, https:\/\/www.ainia.com\/wp-content\/uploads\/2026\/02\/Imagen1-1536x164.png 1536w, https:\/\/www.ainia.com\/wp-content\/uploads\/2026\/02\/Imagen1.png 1878w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/span><\/span><span class=\"EOP SCXW47957951 BCX8\" data-ccp-props='{\"134233117\":false,\"134233118\":false,\"201341983\":0,\"335559685\":720,\"335559738\":0,\"335559739\":0,\"335559740\":300}'>\u00a0<\/span><\/strong><\/em><\/p>\n<\/section>\n<\/article>\n<\/body><\/html>","protected":false},"excerpt":{"rendered":"<p>The salmonella is one of the most common and dangerous bacteria associated with food poisoning outbreaks. This pathogen can be present in a wide variety of foods, and its ability to survive and multiply under variable conditions poses significant challenges in terms of food safety.In this article, we will explore:\u00a0 Main species and genes responsible [&hellip;]<\/p>\n","protected":false},"author":273,"featured_media":131387,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[1971],"tags":[],"class_list":["post-190186","post","type-post","status-publish","format-standard","hentry","category-technological-innovation"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What pathogen causes salmonella? Prevention and Control in Food - AINIA<\/title>\n<meta name=\"description\" content=\"What pathogen causes salmonella? 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