Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

Did you know?

Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

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