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Shining a Light on Chagas Disease: Understanding the Silent Infection

Chagas disease is an often-overlooked parasitic infection that can lead to serious long-term health complications if untreated. It spreads through insect vectors and may show mild or no symptoms early on. Understanding how it spreads and recognising the signs are key—because early detection helps prevent severe outcomes.
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13 April 2026
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On April 14, World Chagas Disease Day, it’s important to shed light on a condition that often goes undetected but can have serious long-term effects.

Chagas disease is a parasitic infection caused by Trypanosoma cruzi. It is most spread by insects known as “kissing bugs,” but can also be transmitted through blood transfusions, organ transplants, or from mother to child during pregnancy. Many people may not realise they are infected because symptoms can be mild or absent at first.

Common symptoms may include:
  • Fever
  • Fatigue
  • Body aches
  • Headache
  • Swelling at the infection site
  • Rash
  • Loss of appetite
  • Nausea or diarrhoea
In some cases, swelling of the eyelids (known as Romaña’s sign) may also occur.

If left untreated, Chagas disease can develop into a chronic condition, potentially leading to serious heart or digestive problems over time.

Raising awareness is key. Early detection and access to treatment can help prevent complications and improve quality of life.
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