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It’s a scourge that has afflicted mankind for more than a thousand years. And it’s what keeps Adam Ratner up at night: measles.

“It is the most infectious disease that we know by far — much more infectious than flu, much more infectious than COVID or polio or Ebola or anything else that I can think of,” says Ratner, a pediatric infectious disease physician in New York City.

, Ratner makes the case that the control of measles is a test of how good our public health institutions are. And the fact that it is 

“When vaccination levels start to fall, we see measles outbreaks first,” he says. “And then those are often followed by outbreaks of other vaccine-preventable diseases, things that are a little less contagious than measles,” he says, adding that “it’s only February and we have already had, you know, small clusters of measles in Texas and Rhode Island and Georgia and a couple of other states.”

Globally, it’s estimated that measles killed more than 107,000 children in 2023, 

 or undervaccinated children under the age of 5. Last year, the U.S. had 284 measles cases — the highest number in five years. That comes as 

against measles, mumps and rubella have dropped below the 95 percent threshold that the Centers for Disease Control and Prevention says is needed to prevent community outbreaks.

The U.S. hasn’t reported a measles death 

. “But I think that with more cases, with larger outbreaks, that may change,” Ratner says.

Before the measles vaccine was developed in the early 1960s, the disease used to kill 

 each year in the United States. Ratner sees the resurgence of measles as one of the ironic byproducts of the success of vaccination. With vaccine hesitancy on the rise, he says that remembering the lessons of our past with this disease is more urgent than ever.

“Measles thrives on being underestimated,” he says. “We tend to forget now, looking back, how bad measles was.”

Ratner says the development of the measles vaccine was just one step in controlling the disease in the U.S. The other was public policy that made vaccination affordable and mandatory. For example, he points to a large measles outbreak in Texarkana in 1970. The metropolitan area straddles Arkansas — which had a school vaccine mandate in place — and Texas, which didn’t.

“About 95 percent of the cases were in the area where there wasn’t a vaccine mandate, where kids weren’t getting vaccinated in schools. So the political decision that was made about vaccine mandates affected the health of those children,” he says.

Ratner says he’s deeply concerned about the nomination of Robert F. Kennedy Jr. as health and human services secretary. Kennedy has 

for decades and he’s expected to be confirmed this week.

“I am very, very worried about the future of not only vaccines, but public health in general in this country and across the world,” he says.

Ratner makes the case that public policy is critical to public health. He says the most important takeaway from his book is that our public health successes are fragile.

“We live in a society now where child mortality is rare, where diseases like measles are rare, and where when kids are born, you can expect that they will likely grow up happy and healthy,” he says. “That is not guaranteed.”

He says it takes political will as well as science to keep the country healthy.

Maria Godoy

Author

As childhood vaccination rates drop in the U.S., outbreaks of measles are rising. In his new book, 

makes the case that this is a bad sign for public health.

As childhood vaccination rates drop in the U.S., outbreaks of measles are rising. In his new book, Booster Shots, Dr. Adam Ratner makes the case that this is a bad sign for public health.


As measles cases rise, a new book warns parents not to underestimate the disease

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