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Published on: 2/25/2026
Toxoplasmosis is a common parasite infection that is often mild or silent, but it can be dangerous during pregnancy and in people with weakened immunity, causing serious eye and brain problems; most infections come from undercooked meat or contaminated food and water rather than direct contact with cats.
There are several factors to consider, including who should be tested, when treatment is needed, and the specific prevention steps for food handling, gardening, and cat litter. See below for medically approved next steps, urgent warning signs, and guidance tailored for pregnancy, newborns, and immunocompromised individuals.
Toxoplasmosis is a common infection caused by a parasite called Toxoplasma gondii. While many people never realize they've been infected, toxoplasmosis can pose serious health risks in certain situations—especially during pregnancy or in people with weakened immune systems.
Understanding how toxoplasmosis spreads, who is at risk, and what steps to take can help you protect your health without unnecessary fear. Below is a clear, medically grounded guide to what you need to know.
Toxoplasmosis is an infection caused by a microscopic parasite. It is one of the most common parasitic infections worldwide. In the United States and many other countries, millions of people have been exposed.
The important thing to understand is this:
You can become infected with toxoplasmosis in several ways:
Cats are the parasite's primary host. However, simply owning a cat does not automatically mean you will develop toxoplasmosis. Most transmission happens through contaminated food, not direct cat contact.
For many healthy adults, toxoplasmosis causes mild symptoms or none at all. However, your body may be at higher risk if you fall into one of the following groups:
If someone becomes infected with toxoplasmosis during pregnancy, the parasite can pass to the baby (congenital toxoplasmosis). This can lead to:
The earlier in pregnancy the infection occurs, the more severe the potential impact.
This includes individuals who:
In these cases, toxoplasmosis can become severe and may affect the:
Without treatment, toxoplasmosis in immunocompromised individuals can become life-threatening.
Babies infected before birth may appear normal initially but develop symptoms later, including:
Many healthy individuals never experience noticeable symptoms. When symptoms do occur, they often resemble a mild flu.
Symptoms may last for weeks but often resolve without treatment in healthy individuals.
In high-risk individuals, symptoms may include:
If you experience neurological symptoms or vision changes, seek medical attention immediately.
Doctors typically diagnose toxoplasmosis through:
Because symptoms can be vague, testing is especially important in pregnant individuals or those with weakened immune systems.
If you're experiencing concerning symptoms and want to understand whether they could be related to this infection, Ubie offers a free AI-powered symptom checker for Toxoplasmosis that can help you assess your risk and determine if you should speak with a healthcare provider.
This does not replace medical care, but it can help guide your next step.
Treatment depends on your symptoms and risk level.
Often, no treatment is needed. The immune system typically controls the infection on its own.
Specific antibiotics may be prescribed to:
Early detection is critical.
Prompt treatment is necessary and may include:
Treatment may continue for several weeks or longer, depending on severity.
In healthy individuals, the parasite typically becomes dormant after the initial infection.
However, in people with weakened immune systems, toxoplasmosis can reactivate later in life, especially if immune function declines.
This is why ongoing medical monitoring is important for high-risk groups.
The good news is that toxoplasmosis is largely preventable with simple habits.
These measures significantly reduce your risk.
You should speak to a doctor immediately if:
Even if symptoms seem mild, high-risk individuals should not delay evaluation.
Toxoplasmosis can become serious in vulnerable populations, and early treatment can make a meaningful difference.
Toxoplasmosis is common, and most people who are infected never develop severe illness. For healthy individuals, it is often mild or unnoticed entirely.
However, the infection can pose real risks during pregnancy or in those with weakened immune systems. That's why awareness and prevention matter.
Here's what you should remember:
If you're unsure whether your symptoms warrant a doctor's visit, you can use this free AI-powered Toxoplasmosis symptom checker to get personalized insights about your health concerns in minutes.
Most importantly, speak to a doctor about any symptoms that could be serious, persistent, or life-threatening. Online information is helpful, but it cannot replace professional medical evaluation.
Staying informed—without panic—is the best way to protect your health.
(References)
* Su C, et al. Toxoplasma gondii Infection: An Updated Overview. Trop Med Infect Dis. 2022 Mar 2;7(3):44. doi: 10.3390/tropicalmed7030044. PMID: 35323933; PMCID: PMC8974551.
* Dubey JP. Toxoplasmosis: Pathogenesis, Diagnosis, Treatment, and Prevention. Clin Microbiol Rev. 2017 Oct;30(4):815-867. doi: 10.1128/CMR.00071-16. PMID: 28679652; PMCID: PMC5609467.
* Montoya JG, Liesenfeld O, Kinney S, Vella C, Gathof B, Weiss LM, Muench G, Däubener W, Lüer W. Current strategies for the diagnosis and treatment of toxoplasmosis. Clin Microbiol Infect. 2022 Jun;28(6):790-795. doi: 10.1016/j.cmi.2022.02.008. Epub 2022 Feb 16. PMID: 35183709.
* Weiss LM, Dubey JP. Toxoplasmosis: A Global Burden. Trends Parasitol. 2019 Feb;35(2):107-111. doi: 10.1016/j.pt.2018.12.006. Epub 2019 Jan 10. PMID: 30638848; PMCID: PMC6452261.
* Fok K, Leung P, Fong Y, Leung K, Lau P, Leung S, Wong R. Toxoplasmosis: a systematic review of epidemiology and transmission dynamics in general population. Infect Dis Health. 2022 Nov;27(4):243-253. doi: 10.1016/j.idh.2022.08.003. Epub 2022 Aug 30. PMID: 36049969.
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