In 1907, one woman affected over 3,000 people with salmonella in New York.
The first recorded salmonella outbreak took place in 1907. Almost 3,000 inhabitants of New York had been infected by Salmonella typhi. How did such a huge outbreak occur? It was probably because of a lady named Mary Mallon. She was born in Ireland in 1869 before emigrating to the United States in 1884. However, she was a carrier of Salmonella typhi. She thought she was healthy and worked in various domestic positions. During that time, Mallon became employed by wealthy families. Eventually, she became a cook. However, because she assumed herself healthy, her denial of being sick allowed her to spread the illness.
Over the years, she gained the unfortunate yet accurate nickname of Typhoid Mary. Authorities forced her into quarantine two different times. Both occasions, she lived on North Brother Island. Mallon was in quarantine for 26 years until she passed away. Although she had no friends of family nearby, Mallon apparently found solace in her faith.