In pictures: Penicillin: The first 'wonder drug'
Penicillin useage

When penicillin was invented it was hailed as a "wonder drug".

Before its arrival, pneumonia and post-operative infections killed one in three of those who got them - babies and the elderly were particularly vulnerable.

Within a decade that figure had dropped to just a few per cent.

The Science Museum examines the history of the drug in its new exhibition - Penicillin: A story of Triumph and Tragedy.

Photo credit: Premature baby ward - National Media Museum

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