5. Typhoid Fever
Another bacterial infection on our list is typhoid fever, which can spread throughout the body and affect plenty of organs. Without being properly treated, this can lead to severe complications and it can even be deadly. The cause of this is a bacterium called Salmonella typhi, which is linked to the bacteria that is responsible for causing salmonella food poisoning.
The most common symptoms of this disease are high fever, constipation, headaches, and sometimes abdominal discomfort. Victims who have a more severe form of this virus can even develop skin rashes that look like rose-colored spots.
It is believed that a cook named Mary Mallon, also known as “Typhoid Mary,” was the one who brought this bacteria to the United States. Some say that she infected between 50 and 100 people during her working period.
She was told by the authorities to quarantine, but she didn’t completely listen and returned to work. After that, she was put into forced isolation by the authorities. The epidemic ended thanks to the vaccine, which is known to be 40% to 90% effective and can last up to 7 years.