The Dangers of Trichinosis: What You Need to Know about Bear Meat

Overview:  Trichinosis is an infection caused by the roundworm Trichinella spiralis or another Trichinella species. Symptoms having pain in muscle, diarrhea and dysentery  and fever.


bear meat

What is Trichinosis?


Trichinellosis: The culprit

Trichinellosis, caused by the roundworm parasite Trichinella, is usually spread by consuming undercooked meat from infected animals. In recent  case of United States , the bear meat contained the parasite, which survived the cooking process and infected family members. The parasite can travel through the human body and, in severe cases, reach the brain, causing a variety of symptoms.


First symptoms shown in the family infected ( It can be taken as General early signs):


The first symptoms were seen in a 29-year-old man, who experienced high fever, swelling around the eyes and severe muscle pain. These symptoms forced him to go to the hospital several times. Soon after, five other family members, including a 12-year-old child, showed similar symptoms of infection. The Minnesota Department of Health investigated, which revealed a link between the family reunion and the consumption of bear meat.

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General  Idea and Life Cycle


People get the infection from wild and uncooked meat

At first, people have nausea, diarrhea, abdominal cramps, followed by muscle pain, weakness, fever, headache, and sometimes swelling of other organs.

# Cooking can actually kill the virus present on the meat but not in the wild one.


Antiparasitic medications such as albendazole can eliminate the worms from the intestine but not the larvae in the muscles, and analgesics are needed to relieve muscle pain.

Trichinella larvae live in the muscle tissue of animals, usually pigs, wild boars, foxes, bears, walruses, and many other carnivores. Occasionally, the muscle tissue of horses that are fed meat supplements contains these larvae.

If a person eats uncooked, undercooked, or undercooked meat from an animal that has the parasite, the person develops trichinosis. In most people, infection occurs from eating pork, especially in areas where pigs are fed uncooked meat scraps and garbage, or from eating the meat of wild boar, bear, or walrus.

There are an estimated 10,000 cases of trichinosis worldwide each year. But people don’t report due to lack of info and knowledge. That’s why we are awaring By the help of  healthdaily

When any human body consumed meat with live trichinelia virus the cyst get digested and larva are released and it start maturing in human intestine.

The male worms die after mating and thus play no further role in the infection. The females burrow into the intestinal wall and, after several days, begin producing larvae.

Larval production continues for about 4 to 6 weeks. After that the female one dies and Excreted out . The larvae are carried through the body via lymphatic vessels and the bloodstream. The larvae penetrate the muscles, causing inflammation. In 1 to 2 months, they form cysts that can survive in the body for years. Eventually, the dead larvae are absorbed or harden (calcify).


Life cycle of a Trichinella roundworm


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Muscles such as around the tongue and ribs in eye are most likely to get infected . The larvae rarely form cysts in heart muscle, but in about a quarter of people with trichinosis, an electrocardiogram (ECG) shows evidence of inflammation in the heart.


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Symptoms of Brain Worm Infection


  • Brain worm infection can show a variety of symptoms depending on the type and location of infection. Symptoms that have been reported in this case include:
  • High fever: One of the earliest symptoms, often accompanied by chills and sweating.
  • Swelling around the eyes: This may be due to the body's immune response to the infection.       Severe muscle pain: Muscle pain is one of the severe symptoms of the parasite. Other possible symptoms of brain worm infection include:
  •  Seizures: Occur when the parasite affects the brain causing infection.
  • Headaches: Frequent and severe headaches are common , Stiff neck: Affects the possible involvement of the central nervous system.
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  • Cysticercosis can also appear outside the brain and spinal cord, causing different symptoms depending on the location of the cysts:
  • Cysts: Mainly are subcutaneous and paimless. Ocular cysts: When cysts form in the eyes, they can cause eye pain, double vision, inflammation (uveitis or retinitis), limited eye movement, bulging vision (proptosis) and vision loss.

Diagnosis of Trichinosis:


  • · Blood Testing are required to check the infectio(antibodies).
  • · Trichinosis cannot be diagnosed by examining feces under a microscope.
  • · Blood tests for Trichinella spiralis are good option, but they don’t show the accurate and positive result until 3 to 5 weeks after that symptoms start to begin.
  • · If the results are negative, a doctor usually bases a preliminary diagnosis of trichinosis on symptoms and the presence of elevated levels of eosinophils (a type of white blood cell) in a blood sample.
  • · The Blood test are repeated several time In span of week’s.
  • · Autopsy are done after 2 weeks of sample taken such as Muscle tissue, but is rarely necessary.

Prevention of Trichinosis: Trichinosis symptoms


  • Trichinosis can be prevented by thoroughly cooking bear meats, especially pork and pork products, at temperatures above 160°F (71°C), until they are browned.
  • · Alternatively, larvae can be killed in domestic pork that is less than 6 inches (15 cm) thick by freezing the pork at -15°F (-5°C) for 20 days. Freezing meat from wild animals is not recommended, as they may be infected with Trichinella species that are not killed by low temperatures.
  • · Smoking, salting, or microwave cooking do not reliably kill larvae.
  • · Meat grinders and other items used to prepare raw meat should be thoroughly cleaned. Washing hands with soap and water is also a must.
  • · Uncooked meat should also not be fed to pigs.

Treating trichinosis :


  • Albendazole or mebendazole (antiparasitic medicines that kill the adult worms)
  • For muscle pain, analgesics
  • For severe infections, corticosteroids
  • Albendazole or mebendazole, taken by mouth, kills the adult worms in the gut but has little effect on cysts in the muscles.
  • Analgesics (such as non-steroidal anti-inflammatory drugs or NSAIDs) help relieve muscle pain.
  • Corticosteroids (such as prednisone) may be given to reduce inflammation in severe infections.
  • Most people with trichinosis recover completely.

Case :

The Case of US family consuming raw and uncooked meat of wild animals remind us to be fully prepare and aware about the consequences and dangers associated with eating wild meat.




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