Carlos Chagas

Hello! My name is Carlos Chagas. I want to tell you the story of a great adventure—my life as a scientist. I was born on a coffee farm in a town called Oliveira in Brazil, way back on July 9th, 1879. Growing up surrounded by nature, I was always curious about the world around me. My family hoped I would become an engineer, but my heart was pulled toward medicine. I wanted to understand how the human body worked and how to help people when they were sick. My curiosity about living things started right there on the farm, and it would guide me for the rest of my life.

I followed my dream and went to medical school in the big city of Rio de Janeiro. It was an exciting time! After I graduated in 1903, I had the amazing opportunity to work with a famous scientist named Oswaldo Cruz. He was my mentor and taught me so much about fighting diseases that were making people very sick. At his research center, the Oswaldo Cruz Institute, I learned how to be a scientific detective, looking for tiny clues to solve big medical mysteries. Dr. Cruz showed me how important it was to observe everything carefully and to never give up on a difficult problem.

In 1907, my boss, Dr. Cruz, sent me to a small town called Lassance. My job was to help stop malaria from spreading among the workers building a new railroad. While I was there, I noticed that many people, especially children, were suffering from a strange illness that wasn't malaria. Their faces would swell, and they felt very weak. I saw big, blood-sucking insects that the locals called 'barbeiros,' or 'kissing bugs,' in their homes, often hiding in the cracks of the mud walls. I had a hunch these bugs might be part of the puzzle. My curiosity took over, and I started investigating this new mystery.

I worked day and night in my makeshift lab, which was set up in a railroad car. First, I studied the kissing bugs and found a brand-new type of parasite, a tiny living thing, wiggling inside them. I named it Trypanosoma cruzi in honor of my teacher, Oswaldo Cruz. Then, on April 14th, 1909, I made the most important discovery of my life. I examined the blood of a little girl named Berenice, who was very sick with the mystery illness. Under my microscope, I found the exact same parasite! I had found the cause of the disease, the insect that carried it, and the sickness it caused in people all at once. No scientist in history had ever done that before.

The new illness was named Chagas disease, after me. After my big discovery, I continued my work, becoming the director of the Oswaldo Cruz Institute in 1917 and helping to improve the health of people all across Brazil. I lived to be 55 years old, and my life was filled with the joy of discovery. Even today, scientists and doctors use my work to help treat Chagas disease and protect families, and I am so proud that my curiosity helped solve a mystery that has saved many lives.