Certain types of bacteria when injected can be especially devastating and can even cause death.

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The result can be a sudden severe asthma attack that requires hospitalization and might even cause death.

NPR: Study Sends New Warning on Asthma Drugs

Since tortoises can go two years between drinks of water, an unplanned micturition can cause dehydration and even death.

WSJ: An Army of Biologists Are on Nature Patrol at Military Bases

This week the billionaire philanthropist Bill Gates will deliver the annual BBC Richard Dimbleby Lecture in which he will spell out his commitment to ridding the world of this dread infectious disease which can cause paralysis and even death within hours.

BBC: Bill Gates: The world can defeat polio

Whooping cough, an illness caused by the pertussis bacteria, can cause severe respiratory symptoms and even death in young infants.

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It's important to note, however, that Kadcyla is not the same as Herceptin and could cause serious side effects including liver problems and heart problems such as congestive heart failure or even death.

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