The Most Contagious Stage of Leprosy

The progression of smallpox starts with a fever and body aches. After that, you'll get a rash and redness that generally starts on the face. Inside your mouth, you will get sores that may break open. This is described as peas under the skin. And it lasts for about 10 days. The mortality rate is about 20 to 40%. About one in three people infected with smallpox will die.