by the pines

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Introduction
Salmonella infection (salmonellosis) is a common bacterial infection of the intestinal tract. Salmonella typically live in the intestines of animals and humans and are shed through feces, where the bacteria remain highly contagious. Humans become infected most frequently through contaminated food sources, such as poultry, meat and eggs.
Typically, people with salmonella infection develop diarrhea, [...]

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Smallpox is a contagious, disfiguring and often deadly disease caused by the variola virus. Few other illnesses have had such a profound effect on human health and history. In the 20th century alone, an estimated 300 million people died of smallpox.
The initial signs and symptoms of smallpox, which appear about two [...]

<h2>Overview</h2>
A child in a child care center develops severe diarrhea. Will the other children get sick, too? It’s entirely possible. Despite proper hand washing, viral diarrhea is highly contagious.
Rotavirus is the most common cause of severe diarrhea in infants and children worldwide, according to the Centers for Disease Control and Prevention (CDC). In fact, rotavirus [...]

Introduction
Plague is a life-threatening infection caused by the organism Yersinia pestis, the bacterium that caused the 14th-century Black Death plague pandemic.
Plague-causing bacteria still exist in the environment today, although their effect has abated dramatically. The major threat of plague these days comes not through natural transmission, but through intentional transmission, perhaps by terrorists as an [...]

Introduction
Yellow fever is a hemorrhagic fever caused by a virus spread by a particular species of mosquito. It is most common in areas of Africa and South America, affecting travelers to and residents of those areas.
In mild cases, yellow fever causes fever, headache, nausea and vomiting. But yellow fever can become more serious, causing bleeding [...]