Toxoplasmosis (Toxoplasma gondii)

Toxoplasmosis is an infection caused by a single-celled parasite called Toxoplasma gondii. The parasite is found throughout the world, with greater presence in regions with warmer climates.. Pregnant women and those with compromised immune systems should be cautious about being exposed because a Toxoplasma infection can cause serious problems. It is believed that more than 60 million people in the United States probably carry the Toxoplasma parasite, but very few have symptoms because their immune system usually keeps the parasite from causing illness.

Toxoplasmosis is acquired through accidental ingestion of:

1. Contaminated cat feces. This can occur if you accidentally touch your hands to your mouth after gardening, cleaning a cat’s litter box, or touching anything that has come into contact with cat feces.

2. Through ingestion of raw or partly cooked meat, especially pork, lamb, or venison, or by touching your hands to your mouth after handling undercooked meat. Through contamination of knives, utensils, cutting boards and other foods that have had contact with raw meat.

3. Through drinking water contaminated with Toxoplasma.

4. Although extremely rare, by receiving an infected organ transplant or blood transfusion.

Most people who become infected with toxoplasmosis do not even know it. The immune system reacts against the living parasite, causing it to hide in an inactive form (cyst) in tissues throughout the body, usually the skeletal muscles and the brain. You may feel like you have the “flu,” swollen lymph glands, or muscle aches and pains that last for a month or more. Rarely, a person with a “normal” immune system may develop eye damage from toxoplasmosis.

Persons with weak immune systems, such as infants, those with HIV/AIDS, those taking certain types of chemotherapy, or persons who have recently received an organ transplant, may develop severe toxoplasmosis. This can cause damage to the brain or the eyes. Most infants who are infected while in the womb have no symptoms at birth but may develop symptoms later in life. Only a small percentage of infected newborns have serious eye or brain damage at birth.

If the initial infection occurs in an individual with a weakened immune system, severe symptoms can develop including:

  • Severe Headache
  • Confusion/Mental Deterioration
  • Fever
  • Poor Coordination
  • Paralysis
  • Nausea/Vomiting
  • Seizures
  • Coma
  • Potential complications include: eye damage, brain damage and death.

Infants born to mothers who became infected with Toxoplasma for the first time during or just before pregnancy are at risk for severe toxoplasmosis. So are persons with severely weakened immune systems. This results from an acute Toxoplasma infection or an infection that occurred earlier in life that reactivates and causes damage to the brain, eyes, or other organs.

There are several different kinds of blood tests for toxoplasmosis. The results from the different tests can help your provider determine if you have Toxoplasma infection and if the infection is recent.

If you are planning to become pregnant, your health care provider may test you for Toxoplasma. If the test is positive it means you have already been infected sometime in your life. There usually is little need to worry about passing the infection to your baby. If the test is negative, take necessary precautions to avoid infection. If you are already pregnant, you and your health care provider should discuss your risk for toxoplasmosis. Your health care provider may order a blood sample for testing.

If you have a weakened immune system or are pregnant there are some steps to take to avoid being exposed to Toxoplasma.

  • Cats. Help prevent your cat from becoming infected with Toxoplasma. Keep it indoors and feed it dry or canned cat food. A cat can become infected by eating infected prey or being fed raw or undercooked meat infected with the parasite.

    Do not bring a new cat into your house that might have spent time out of doors or might have been fed raw meat. Avoid stray cats and kittens and their adopted habitat. Your veterinarian can answer any other questions you may have regarding your cat and risk for toxoplasmosis.

    Have someone who is healthy and not pregnant change your cat’s litter box daily. If this is not possible, wear gloves and clean the litter box daily (the parasite found in cat feces needs one or more days after being passed to become infectious.) Wash your hands well with soap and water afterwards.

    Cats spread Toxoplasma in their feces for only a few weeks of their lives, usually after they are first infected with the parasite. Like humans, cats rarely have symptoms when first infected, so most people do not know if their cat has been infected with Toxoplasma. It is not helpful to have your cat or your cat’s feces tested for Toxoplasma.

    Wear gloves when you garden or do anything outdoors that involves handling soil. Cats, which may pass the parasite in their feces, often use gardens and sandboxes as litter boxes.

  • Handling / Cooking Meat. When preparing raw meat, wash any cutting boards, sinks, knives, and other utensils that might have touched the raw meat thoroughly with soap and hot water to avoid cross-contaminating other foods. Wash your hands well with soap and water after handling raw meat.

    Cook all meat thoroughly; that is, to an internal temperature of 160° F and until it is no longer pink in the center or until the juices become colorless. Do not taste meat before it is fully cooked.

Once a diagnosis of toxoplasmosis is confirmed in an otherwise healthy person who is not pregnant, treatment usually is not needed. Symptoms typically go away within a few weeks. For pregnant women or persons who have weakened immune systems, drugs are available to treat toxoplasmosis.


Signs, symptoms & indicators of Toxoplasmosis (Toxoplasma gondii)

Symptoms - Food - General  

Weak appetite

Symptoms - General  

Poor bodily coordination



Symptoms - Glandular  

Recent swollen/painful lymph nodes

Symptoms - Head - Eyes/Ocular  

Blind spots or enlarged blind spot

Toxoplasmosis can affect the nervous system and especially the eye. It is a common cause of permanent damage to the retina, causing a blind spot of variable size, which may enlarge at intervals throughout life.


Vision disturbances


(High) sensitivity to bright light


Unilateral/bilateral eye pain

Symptoms - Head - Mouth/Oral  

Raw throat

Symptoms - Metabolic  

Having headaches


Having a high/having a moderate/having a slight fever

Symptoms - Mind - General  

Periods of confusion/disorientation

Symptoms - Muscular  

Tender muscles

Symptoms - Respiratory  

Chronic nonproductive cough


Air hunger or sudden shortness of breath

Symptoms - Skin - Conditions  


Conditions that suggest Toxoplasmosis (Toxoplasma gondii)



Nervous System  

Personal Background  

Absence of toxoplasmosis

Symptoms - Head - Nose  

Nasal congestion

Risk factors for Toxoplasmosis (Toxoplasma gondii)

The Immune System  

Symptoms - Muscular  

History of tender muscles

Toxoplasmosis (Toxoplasma gondii) suggests the following may be present

The Immune System  

Toxoplasmosis (Toxoplasma gondii) can lead to


Recommendations for Toxoplasmosis (Toxoplasma gondii)

Oxygen / Oxidative Therapies  

Ozone / Oxidative Therapy

Toxoplasmosis is one of the conditions typically listed as being responsive to ozone therapies. Ozone promptly reverses AIDS-related opportunist infections like toxoplasmosis.


Vitamin C (Ascorbic Acid)

Mice were infected with Toxoplasma gondii, some of which received vitamin C starting 1 week prior to infection. The vitamin C treated mice had a significantly longer survival time . [Trans R Soc Trop Med Hyg 1974; 68( 1): pp.76-7]


Weak or unproven link
Strong or generally accepted link
Proven definite or direct link
Very strongly or absolutely counter-indicative
May do some good



An organism living in or on another organism.

Immune System

A complex that protects the body from disease organisms and other foreign bodies. The system includes the humoral immune response and the cell-mediated response. The immune system also protects the body from invasion by making local barriers and inflammation.

CAT Scan

(Computerized Axial Tomography scan). A scanning procedure using X-rays and a computer to detect abnormalities of the body's organs.


A closed pocket or pouch of tissue; a cyst may form within any tissue in the body and can be filled with air, fluid, pus, or other material. Cysts within the lung generally are air filled, while cysts involving the lymph system or kidneys are fluid filled. Cysts under the skin are benign, extremely common, movable lumps. These may develop as a result of infection, clogging of sebaceous glands, developmental abnormalities or around foreign bodies.

Lymph Glands

Located in the lymph vessels of the body, these glands trap foreign material and produce lymphocytes. These glands act as filters in the lymph system, and contain and form lymphocytes and permit lymphatic cells to destroy certain foreign agents.


Abbreviation for human immunodeficiency virus, a retrovirus associated with onset of advanced immunodeficiency syndrome (AIDS).


A treatment of disease by any chemicals. Used most often to refer to the chemical treatments used to combat cancer cells.


Symptoms resulting from an inclination to vomit.


While there are over 40 types of seizure, most are classed as either partial seizures which occur when the excessive electrical activity in the brain is limited to one area or generalized seizures which occur when the excessive electrical activity in the brain encompasses the entire organ. Although there is a wide range of signs, they mainly include such things as falling to the ground; muscle stiffening; jerking and twitching; loss of consciousness; an empty stare; rapid chewing/blinking/breathing. Usually lasting from between a couple of seconds and several minutes, recovery may be immediate or take up to several days.


An illness or symptom of sudden onset, which generally has a short duration.

Nervous System

A system in the body that is comprised of the brain, spinal cord, nerves, ganglia and parts of the receptor organs that receive and interpret stimuli and transmit impulses to effector organs.


A 10-layered, frail nervous tissue membrane of the eye, parallel with the optic nerve. It receives images of outer objects and carries sight signals through the optic nerve to the brain.

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