Joseph Lister

Hello! My name is Joseph Lister. I was born in a town called Upton, England, on April 5th, 1827. My father was a scientist who helped make microscopes even better. He would let me peek through the lens, and what I saw was amazing! I saw a whole new world full of tiny, invisible things. Seeing that secret world made me very curious. I knew right then that I wanted to become a doctor so I could use science to help people.

When I grew up, I became a surgeon. I loved helping my patients get better, but I noticed something very sad in the hospitals during the 1800s. Many people who had an operation would get very sick afterward. Their wounds would get infected, which meant they got sore and puffy and didn't heal well. Doctors back then didn't know about germs, so they didn't even wash their hands or their tools before helping someone. I knew there had to be a reason why this was happening, and I was determined to find it.

One day, I read about the work of another scientist named Louis Pasteur. He had discovered that tiny, invisible living things called 'germs' could cause things to spoil and could also make people sick. It was like a lightbulb went on in my head! I thought, what if these invisible germs were getting into the wounds during surgery and causing the infections? It suddenly made so much sense. I believed that if I could find a way to kill the germs, I could keep my patients safe and help them heal properly.

I decided to try a chemical called carbolic acid, which was known to kill germs. In 1865, I began my new plan. I started to clean all of my surgical tools with carbolic acid. I even sprayed a mist of it in the air during operations to clear out any germs floating around. One of my first patients to receive this new care was a boy named James Greenlees, who had a badly broken leg. I carefully cleaned his wound with carbolic acid, and he healed perfectly without getting any infection at all! My plan was working.

I lived to be 84 years old. Today, I am remembered as the 'father of modern surgery' because my ideas about keeping things clean changed hospitals forever. Every time a doctor washes their hands or uses sterile tools, they are using the ideas I helped pioneer. My work made surgery so much safer for everyone, and I am very proud of that.