Cross-posted.

One issue that I am fairly militant about is vaccination. Vaccines are arguably the greatest invention in human history. Vaccines made smallpox, a disease that slaughtered billions, extinct. Polio, which used to maim and kill millions, is on the brink of extinction. A couple of weeks ago, Rubella became extinct in the Americas:

After 15 years of a widespread vaccination campaign with the MMR (measles-mumps-rubella) vaccine, the Pan American Health Organization and the World Health Organization announced yesterday that rubella no longer circulates in the Americas. The only way a person could catch it is if they are visiting another country or if it is imported into a North, Central or South American country.

…

Rubella, also known as German measles, was previously among a pregnant woman’s greatest fears. Although it’s generally a mild disease in children and young adults, the virus wreaks the most damage when a pregnant woman catches it because the virus can cross the placenta to the fetus, increasing the risk for congenital rubella syndrome.

Congenital rubella syndrome can cause miscarriage or stillbirth, but even the infants who survive are likely to have birth defects, heart problems, blindness, deafness, brain damage, bone and growth problems, intellectual disability or damage to the liver and spleen.

Rubella used to cause tens of thousands of miscarriages and birth defects every year. Now it too could be pushed to extinction.

Of course, many deadly diseases are now coming back thanks to people refusing to vaccinate their kids. There is an effort to blame this on “anti-government” sentiment. But while that plays role, the bigger role is by liberal parents who think vaccines cause autism (you’ll notice we’re getting outbreaks in California, not Alabama). As I’ve noted before, the original research that showed a link between vaccines and autism is now known to have been a fraud. Recently, we got another even more proof:

On the heels of a measles outbreak in California fueled by vaccination fears that scientists call unfounded, another large study has shown no link between the measles-mumps-rubella vaccine and autism.

The study examined insurance claims for 96,000 U.S. children born between 2001 and 2007, and found that those who received MMR vaccine didn’t develop autism at a higher rate than unvaccinated children, according to results published Tuesday by the Journal of the American Medical Association, or JAMA. Even children who had older siblings with autism—a group considered at high risk for the disorder—didn’t have increased odds of developing autism after receiving the vaccine, compared with unvaccinated children with autistic older siblings.

96,000 kids — literally 8000 times the size of the sample Wakefield had. No study has ever reproduced Wakefield’s results. That’s because no study has been a complete fraud.

There’s something else, though. This issue became somewhat personal for me recently. My son Ben came down with a bad cough, a high fever and vomiting. He was eventually admitted to the hospital for a couple of days with pneumonia, mainly to get rehydrated. He’s fine now and playing in the next room as I write this. But it was scary.

I mention this because one of the first questions the nurses and doctors asked us was, “Has he been vaccinated?”

My father, the surgeon, likes to say that medicine is as much art as science. You can know the textbooks by heart. But the early symptoms of serious diseases and not-so-serious one are often similar. An inflamed appendix can look like benign belly pain. Pneumonia can look like a cold. “Flu-like symptoms” can be the early phase of anything from a bad cold to ebola. But they mostly get it right because experience with sick people has honed their instincts. They might not be able to tell you why they know it’s not just a cold, but they can tell you (with Ben, the doctor’s instinct told him it wasn’t croup and he ordered a chest X-ray that spotted the pneumonia).

Most doctors today have never seen measles. Or mumps. Or rubella. Or polio. Or anything else we routinely vaccinate for. Thus, they haven’t built up the experience to recognize these conditions. Orac, the writer of the Respectful Insolence blog, told me of a sick child who had Hib. It was only recognized because an older doctor had seen it before.

When I told the doctors Ben had been vaccinated, their faces filled with relief. Because it meant that they didn’t have to think about a vast and unfamiliar terrain of diseases that are mostly eradicated. It wasn’t impossible that he would have a disease he was vaccinated against — vaccines aren’t 100%. But it was far less likely. They could narrow their focus on a much smaller array of possibilities.

Medicine is difficult. The human body doesn’t work like it does in a textbook. You don’t punch symptoms into a computer and come up with a diagnosis. Doctors and nurses are often struggling to figure out what’s wrong with a patient let alone how to treat it. Don’t cloud the waters even further by making them have to worry about diseases they’ve never seen before.

Vaccinate. Take part in the greatest triumph in human history. Not just to finally rid ourselves of these hideous diseases but to make life much easier when someone does get sick.