A group of scientists has issued a warning about a prevalent pet parasite that may be infecting as many as one-third of the global population, putting billions of individuals at risk of severe health implications.
In a collaborative study involving multiple universities, researchers are urging for increased global awareness regarding toxoplasma gondii, a parasite commonly associated with cats. Despite previous beliefs that it had minimal health effects, this parasite has been identified as the “leading intraocular infection worldwide,” affecting billions of people, most of whom do not show symptoms, especially if they are in good health.
Recent findings reveal that toxoplasmosis-causing parasites can lead to eye infections that damage the retina, prompting experts to advocate for its classification as a neglected tropical disease (NTD).
Professor Justine Smith, the lead author of the study published in the journal PLOS Neglected Tropical Diseases, emphasized that toxoplasmosis is a significant cause of vision loss globally, yet it remains overlooked in terms of public health priorities.
While many individuals infected with toxoplasmosis remain asymptomatic, those with weakened immune systems may experience flu-like symptoms. In certain cases, the parasite can lie dormant in the body and later manifest as eye infections, affecting both immune-compromised and healthy individuals.
Ocular toxoplasmosis can result in symptoms such as eye pain, redness, vision impairment, and floaters in the visual field. In severe instances, it can lead to retinal inflammation and permanent blindness.
The study, spearheaded by Associate Professor João Furtado from the University of São Paulo and Professor Justine Smith from Flinders University in Australia, brought together experts from various regions worldwide. Professor Smith stressed the need for increased attention to the eye-damaging effects of toxoplasmosis, which are often neglected on a global health scale.
Acknowledging that toxoplasmosis is preventable and controllable, Professor Furtado underlined the importance of recognizing and addressing this issue to mitigate its potential impact on public health. Implementing measures such as enhancing food safety, ensuring clean water supply, promoting sanitation, and improving access to antenatal care could help reduce the spread of toxoplasmosis.
Individuals typically contract toxoplasma gondii through consuming undercooked meat, contaminated water or produce, and exposure to cat feces. Cats, in turn, become infected by ingesting contaminated substances.
By prioritizing the awareness and prevention of toxoplasmosis, public health specialists aim to curb the prevalence of eye infections associated with this parasite and safeguard global vision health.