Herd Immunity Explained by GIF
March 10,2015 Sarah Stapleton

By now you've no doubt heard the chatter and debate going on about vaccination. In several communities across the United States, parents are choosing not to vaccinate their children and the nation is beginning to see the effects.

As you can see on this chart created by the CDC, reported  cases of measles have skyrocketed in 2015 and are on their way to looking just as bad for 2015.

So, herd immunity. It's the title of this blog, but what's it all about?

Basically, herd immunity is when the majority of people in a nation/city/community vaccinate against a certain disease so that if someone who is unvaccinated gets sick the disease can stay contained because it doesn't spread throughout the population.

After all, there are several types of people who cannot receive vaccines (tiny babies, people receiving chemotherapy, etc.). When herd immunity is embraced there is a smaller chance that those who cannot be vaccinated will contract the disease.



How Herd Immunity Works

How Fast Can Disease Spread?

So, here's the gist.

People who are allergic to vaccines, people with cancer, babies, and others are dependent upon the rest of the population. Those people rely on herd immunity to stay healthy. .

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