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Articles on Pathogens

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The black-legged tick is the vector that spreads Lyme disease. Its bite can infect humans with the Borrelia burgdorferi bacterium. (Jim Gathany/CDC)

Lyme disease: The pathogen’s cunning strategies for persistent infection offer clues for vaccine development

The bacterium that causes Lyme disease is a master of disguise, changing its appearance to evade the immune system as it moves from the ticks that carry it to humans or animals.
Being feverish is unpleasant, but it can help your body overcome invading pathogens. Narisara Nami/Moment via Getty Images

How does fever help fight infections? There’s more to it than even some scientists realize

The heat and chills that come with fever are not only uncomfortable but also metabolically costly. Increased body temperature, however, can make all the difference when you’re sick.
Museum specimens are like time capsules from where and when the organisms and their pathogens lived. Ed Maker/The Denver Post via Getty Images

Leprosy-causing bacteria found in armadillo specimens highlight value of museum collections for tracking pathogens

Museum archives hold biological specimens that have been collected over years or even decades. Modern molecular analysis of these collections can reveal information about pathogens and their spread.

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