What microorganisms may be present in diseased pork?
May 13, 2025
Source: Cainiu Health
Dr. Yang Ziqi
Introduction
Under normal circumstances, pork from diseased pigs may contain various harmful microorganisms to humans, mainly including Streptococcus suis, Salmonella, Staphylococcus aureus, Proteus, and Listeria monocytogenes. To avoid infection by the above microorganisms and pathogens, consumers are advised to choose pork from regular and reliable sources when purchasing pork.
Under normal circumstances, pork from diseased pigs may contain various harmful microorganisms to humans, mainly including Streptococcus suis, Salmonella, Staphylococcus aureus, Proteus, and Listeria monocytogenes. Detailed explanations are as follows:
1. Streptococcus suis
Streptococcus suis is a Gram-positive coccus found in nature and is a common bacterium in pigs. After human infection with Streptococcus suis, symptoms such as fever, chills, headache, and reduced appetite may occur. Severe cases may develop toxic shock syndrome.
2. Salmonella
Salmonella is a Gram-negative bacterium found in the intestines of livestock such as pigs, cattle, and sheep. Consuming pork contaminated with Salmonella may cause gastrointestinal infections in humans, leading to symptoms like diarrhea, vomiting, and fever. In severe cases, it can even be life-threatening.
3. Staphylococcus aureus
Staphylococcus aureus is a Gram-positive coccus present in areas such as pigs' skin, nasal cavity, and digestive tract. Consuming pork contaminated with Staphylococcus aureus and its toxins may lead to food poisoning symptoms such as nausea, vomiting, abdominal pain, and diarrhea.
4. Proteus
Proteus is a Gram-negative bacterium commonly found in environments such as soil, water, and food, and may also exist in the intestines of pigs. Consuming pork contaminated with Proteus may cause food poisoning symptoms including nausea, vomiting, abdominal pain, and diarrhea.
5. Listeria monocytogenes
Listeria monocytogenes is a Gram-positive bacterium widely present in nature, including in the intestines of livestock such as pigs. Consuming pork contaminated with Listeria monocytogenes may cause food poisoning symptoms such as nausea, vomiting, diarrhea, and fever.
To avoid infection by the above-mentioned microorganisms and pathogens, consumers are advised to purchase pork from reputable sources to ensure its reliability. When cooking pork, ensure it is thoroughly cooked to kill any potentially present microorganisms and pathogens. If discomfort symptoms occur after consuming pork, seek medical attention promptly and inform the doctor about the pork consumption to ensure timely and effective treatment.
