If you suffer from vomiting and diarrhea caused by norovirus, you’ll want to know what norovirus is — and how long does norovirus last. Learn more here.
What Do You Know About Tuberculosis?
Many people think tuberculosis (TB) is no longer a threat, but it's still a leading killer worldwide. One-third of the world’s population (about 2 billion people) are infected with the bacteria that cause TB.
1. How do you get TB?
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Tuberculosis is a disease that can affect any part of the body, but the infection most often targets the lungs. Most TB cases are caused by inhaling the bacteria. People can get TB when an infected person coughs, sneezes, speaks, sings, or laughs. Tuberculosis has been around for thousands of years, but it did not become a major health problem until the Industrial Revolution. Crowded living conditions helped it spread. In the 17th and 18th centuries, TB caused a quarter of all adult deaths in Europe. Only the active form of the disease is contagious. Some people have inactive TB, or latent TB. This can't be spread to other people unless it becomes activated for some reason.