Botulism is a rare and potentially fatal illness caused by a toxin. Fisrt symptoms include weakness, blurred vision, feeling tired, and trouble speaking. The disease does not usually affect consciousness or cause a fever. The toxin will attack in a different way depending if it is inhaled, eaten or injected. Though there is a vaccine, its usefulness is unclear as it is associated with significant adverse effects.
Caused by a string of the salmonella bacteria, typhoid is an infection with symptoms that may vary from mild to severe that includes weakness, abdominal pain, constipation, and headaches. Some people develop a skin rash with rose colored spots. It is believed that the plague that killed one third of Athens population in 430 BC was thyphoid fever. The most notorious carrier of typhoid fever was Mary Mallon (also known as Typhoid Mary). The was a cook who In 1907 became the first carrier in the United States to be identified and traced due to be closely associated with 53 cases and three deaths.