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PULSE CHECKSeptember 1, 2026·Florida Healthcare Collective

Herd Immunity Is Not an Opinion. It’s a Rate — and Florida Is Quietly Lowering It.

On August 22, Florida moved to strip four vaccines from its school entry requirements. Three days later, Pennsylvania announced two measles deaths — its first in 35 years. Those two events are not causally connected. Read together anyway, they expose the part of this debate almost nobody is arguing about.

Let’s start with what actually happened, because the week moved fast.

On Thursday, August 22, Florida Surgeon General Dr. Joseph Ladapo approved a proposed Department of Health rule removing four vaccines — hepatitis B, varicella, Haemophilus influenzae type b, and pneumococcal conjugate — from PreK–12 school entry requirements. MMR, polio, diphtheria and tetanus stay on the list. The rule also expands the religious exemption to cover “moral and ethical beliefs,” and lets parents and college students opt out of the state immunization registry entirely. It is now in a 21-day public comment window.

On Monday, August 25, Pennsylvania Governor Josh Shapiro announced two measles deaths in Lancaster County. Both people were unvaccinated. They were the first measles deaths in Pennsylvania in 35 years and the first in the United States in 2026 — a year that had already broken the national case record by mid-July, and that has put America’s measles elimination status, held since 2000, in genuine jeopardy.

Then the U.S. Health Secretary, Robert F. Kennedy Jr., went on the record questioning whether the deaths had occurred at all: “We’re trying to figure out whether — you know, who those deaths were and whether they actually happened.” He also falsely suggested the measles vaccine contains fetal tissue, framed vaccination as a matter of parental choice, and did not urge unvaccinated people in the outbreak area to get vaccinated.

The four vaccines are not the story

Here is where most of the commentary this week got lazy, and where we are going to disagree with our own side.

You cannot draw a straight line from Florida’s proposed rule to two coffins in Lancaster County. Different state, different week, different vaccine. Measles is prevented by MMR — and MMR is not on Florida’s removal list. Neither is polio. Anyone telling you Florida just deregulated measles is misleading you, and the people they are trying to persuade can tell.

It is also true that the four vaccines being dropped do not behave alike in a classroom. Hepatitis B is bloodborne. Pneumococcal disease is not what fills a school nurse’s log in an outbreak. Treating all four as one undifferentiated public-health emergency is exactly the kind of overreach that has cost health authorities their credibility since 2020.

The vaccine list is a headline. The exemption is the policy. And the exemption applies to every required vaccine — including the ones Florida is keeping.

The exemption is the story

Two provisions in that rule have nothing to do with the four vaccines being removed. Broadening the religious exemption to include “moral and ethical beliefs” lowers the bar for opting out of all school-required immunizations. And allowing families to opt out of the state immunization registry removes the instrument public health uses to find undervaccinated pockets before an outbreak — not after.

That is the mechanism that moves a coverage rate. And coverage rate is not a values question. It is arithmetic.

Measles is among the most contagious diseases known to medicine: one infected person can transmit it to twelve to eighteen unvaccinated people. That is why the community protection threshold sits at roughly 95% — not 80%, not “most kids.” National kindergarten coverage is now 92.4%. Only ten states reach 95%. Lancaster County, where those two people died, sits at 87.6%.

Between 95% and 87.6% there is no philosophical disagreement. There is a chain of transmission that either breaks or doesn’t. And the people who pay when it doesn’t break are frequently not the people who made the choice: infants too young to be vaccinated, children in chemotherapy, transplant recipients, the immunosuppressed adult in the pickup line.

The strongest argument against us

We would be doing the same thing we just criticized if we skipped this part.

There is a serious, non-crank case for Florida’s direction. A school mandate is coercive by design: it conditions access to public education on a medical procedure, and reasonable people find that a heavy instrument for a government to hold. Ladapo put it plainly — “Who am I to tell you what your child should put in their body? I don’t have that right.”

There is also a hard practical truth underneath it. Public trust in health authorities did not decline because of one rule; it collapsed on its own after 2020, and mandates imposed on a population that no longer trusts the mandator tend to produce resistance rather than coverage. The American Academy of Pediatrics’ president, Dr. Susan Kressly, is right that “close contact makes it easy for contagious diseases to spread quickly” — but being right has not been sufficient for some time now.

And most parents who delay vaccines are not activists. They are frightened, under-informed, and talked at rather than talked to. Every clinician reading this has met them. Calling them stupid has a documented success rate of zero.

One more inconvenient fact, this time for the rule’s supporters: not a single Florida legislator filed a bill in the 2026 sessions to remove these requirements from state law. The regulatory path and the legislative path are not pointing the same direction, which is usually how a rule ends up in court.

What this means if you run a practice in Florida

Nothing has changed yet. The rule is proposed, not adopted, and the comment window is open now — which means the current requirements still apply and enforcing anything else today is a documentation problem waiting to happen.

What changes if it is adopted is quieter and more operational: a new exemption category to capture and date, signed forms to retain, and a registry you can no longer assume is complete. A student record that once meant “up to date” will increasingly mean “unknown” — and “unknown” has to be written down as unknown, not inferred.

Florida Healthcare Collective does not administer vaccines and takes no position on what any family should choose. What we do is help Florida providers keep records that hold up when the rules move underneath them — through risk management consulting and HIPAA consulting. If your intake forms, exemption documentation or retention practices were built for the old rule, this is the quarter to look at them.

And if you disagree with this piece, say so. The comment section is open, and so is the state’s.

This article is general information for healthcare professionals and does not constitute medical or legal advice. Verify rule status and effective dates with the Florida Department of Health before changing any policy.

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