How Can the Unvaccinated Spread Diseases They Don’t Have?

Folks who are intentionally unvaccinated often have a hard time understanding why the rest of us might be a little leery of being around them.

That’s especially true if we have a new baby in the house, younger kids who aren’t fully vaccinated and protected, or anyone with a chronic medical condition who can’t be vaccinated.

Why? Of course, it is because we don’t want them to catch measles, pertussis, or other vaccine-preventable diseases.

“How can you spread a disease that you don’t even have?”

It’s true, you can’t spread a disease that you don’t have.

But infectious diseases don’t magically appear inside our bodies – we catch them from other people. And if you have skipped or delayed a vaccine, then you have a much higher chance of getting a vaccine-preventable disease than someone who is vaccinated and protected.

So, just avoid other people when you are sick, right?

“…the increased risk of disease in the pediatric population, in part because of increasing rates of vaccine refusal and in some circumstances more rapid loss of immunity, increases potential exposure of immunodeficient children.”

Medical Advisory Committee of the Immune Deficiency Foundation

That works great in theory, but since you are often contagious before you show signs and symptoms and know that you are sick, you can very easily spread a disease that you don’t even know that you have.

An infant hospitalized during a measles outbreak in the Philippines in which 110 people died.
Children with measles are contagious 4 days before through 4 days after their rash appears, but you often don’t recognize that it is measles until they get the rash! Photo by Jim Goodson, M.P.H.

There’s the trouble:

  1. being unvaccinated, you or your child are at higher risk to get sick
  2. when you get sick, you can be contagious several days before you have obvious symptoms
  3. you can spread the disease to others before you ever know that you are sick, or at least before you know that you have a vaccine preventable disease

This makes intentionally unvaccinated folks a risk to those who are too young to be vaccinated, are too young to be fully vaccinated, have a true medical exemption to getting vaccinated, or when their vaccine simply didn’t work.

measles-santa-clara-county
Folks with measles often expose a lot of other people because they don’t yet know that they have measles and aren’t showing signs and symptoms yet.

In fact, this is how most outbreaks start. Tragically, kids too young to be vaccinated get caught up in these outbreaks.

Keep in mind that these parents didn’t have a choice about getting them protected yet. Someone who decided to skip their own vaccines made that choice for them.

And remember that while you can’t spread a disease that you don’t even have, you can certainly spread a disease that you don’t realize that you have.

What to Know About The Unvaccinated Spreading Disease

If you aren’t going to get vaccinated or vaccinate your kids, understand the risks and responsibilities, so that you don’t spread a vaccine-preventable diseases to others that you might not even know that you have yet.

More on the Unvaccinated Spreading Disease

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