Переведите in the 19th century many people got sick and died after they had operations because of infection. but doctors didn't know about it. that is why they didn't wear special clothes during operations didn't always wash their hands or clean their instruments. a british doctor, joseph lister, knew that infection was caused by germs.in his hospital doctors started to wear special white clothes.they regularly washed their hands and cleaned their instruments before and after operations. it saved many sick people in the hospital. in 1928 a british scientist alexander fleming worked in his laboratory at st mary's medical school. with the help of his microscope he studied some green mould and saw that it killed the germs, which were near it. it was a very important discovery which fleming called peni- cillin, it was the first medicine against infection. but it was too expencive to make. in 1941 henry florey and ernst chain from oxford found a cheaper way to make the medicine and it saved millions of people. in 1945 the three men got a nobel prize for their work.
Это было очень важное открытие, которое Флеминг назвал пенициллин, это был первый антисептик. Но он был слишком дорог в производстве.В 1941 году Генри Ф. и Ернст Ч. из Оксфорда нашли создания дешёвого антисептика который миллионы жизней. В 1945 году 3 человек получили Нобелевскую Премию за их работы. (Простите за долгое время написания)