What is Alexander Fleming most famous for?

In 1928, at St. Mary’s Hospital, London, Alexander Fleming discovered penicillin. This discovery led to the introduction of antibiotics that greatly reduced the number of deaths from infection.

What is contribution of Alexander Fleming in microbiology?

Sir Alexander Fleming FRS FRSE FRCS (6 August 1881 – 11 March 1955) was a Scottish physician and microbiologist, best known for discovering the world’s first broadly effective antibiotic substance, which he named penicillin.

How did Sir Alexander Fleming discover penicillin?

Alexander Fleming’s Discovery After isolating the mold and identifying it as belonging to the Penicillium genus, Fleming obtained an extract from the mold, naming its active agent penicillin. He determined that penicillin had an antibacterial effect on staphylococci and other gram-positive pathogens.

Who discovered the antibiotics?

In the 1920s, British scientist Alexander Fleming was working in his laboratory at St. Mary’s Hospital in London when almost by accident, he discovered a naturally growing substance that could attack certain bacteria.

Who developed the first antibiotic?

The Emergence of Penicillin In the 1920s, British scientist Alexander Fleming was working in his laboratory at St. Mary’s Hospital in London when almost by accident, he discovered a naturally growing substance that could attack certain bacteria.

What was Alexander Fleming trying to invent?

Sir Alexander Fleming, a Scottish researcher, is credited with the discovery of penicillin in 1928. At the time, Fleming was experimenting with the influenza virus in the Laboratory of the Inoculation Department at St. Mary’s Hospital in London.

Who invented antibiotics?

1928 to 1929. In 1928 Dr Alexander Fleming returned from a holiday to find mould growing on a Petri dish of Staphylococcus bacteria. He noticed the mould seemed to be preventing the bacteria around it from growing.