Society · Public Health

Rabies is rare in America. So why did the CDC issue a nationwide alert?

The warning is not evidence of a wave of human rabies cases. It is a signal that animal exposures, preventive treatment and treatment mistakes are rising at the same time — a combination that puts unusual pressure on a system built to stop an almost universally fatal disease before symptoms begin.

September 15, 2026 · United States · Explainer

Rabies occupies a strange place in American public health. The disease is frightening because once symptoms begin it is almost always fatal, yet human cases in the United States remain exceptionally uncommon. That apparent contradiction is exactly why the Centers for Disease Control and Prevention’s new national advisory matters. The agency is not saying the country is in the middle of a human rabies epidemic. It is warning that the protective machinery that keeps human rabies rare — rapid exposure assessment, animal testing, wound care, immune globulin and precisely timed vaccination — is being called on more often, and that mistakes are being reported along the way.

The CDC’s Health Alert Network advisory, dated September 10, says multiple U.S. jurisdictions have reported local increases since July in people exposed to animals that were rabid, potentially rabid or associated with recognized rabies risk. Some events involved multiple people. The CDC also said it received reports from at least eight state health departments of increased use of post-exposure prophylaxis, known as PEP, administration errors, or both. The message is aimed heavily at clinicians and health departments, but its practical meaning extends to anyone who encounters a bat, raccoon, skunk, fox or other animal behaving in an unusual way.

The alert is about exposure management, not a surge of human disease

The most important distinction is between an exposure and a human rabies case. A possible exposure can be a bite, scratch or another situation in which saliva from a potentially rabid animal could have reached broken skin or mucous membranes. Many such incidents never result in infection. Some animals can be tested. Dogs, cats and ferrets may sometimes be observed under public-health guidance. And many people evaluated after an animal encounter are ultimately told that PEP is not necessary.

Human rabies itself remains rare in the United States because that decision system usually works. CDC describes rabies as nearly 100% fatal once clinical illness develops, but preventable when appropriate care is given before symptoms begin. That turns the response to a possible exposure into a high-stakes problem of timing and accuracy. Treat too little or too late, and a preventable infection can become catastrophic. Treat when there was no meaningful risk, or administer the biologics incorrectly, and patients can undergo an expensive, multi-visit regimen they did not need — while scarce clinical attention and products are consumed unnecessarily.

Rabies prevention often begins with a risk assessment: what animal was involved, what contact occurred, whether the animal can be tested or observed, and whether treatment is indicated.

17%More rabies-related inquiries received by CDC in July–August 2026 than in the same period of 2025.

8+State health departments reporting increased PEP use, administration errors, or both.

100KApproximate number of Americans who receive rabies PEP after a potential exposure in a typical year.

The activity has also shown up in pharmacy utilization. Based on weekly data available to CDC as of September 2, use of the two licensed human rabies vaccines was up an estimated 33% from the comparable period a year earlier, while use of the two licensed human rabies immune globulin products was up about 76%. Those are large increases, but they should not be read as a direct count of infected people. They measure use of preventive products in a system designed to act before anyone can know with certainty that infection would have occurred.

CDC says there is currently no national shortage of human rabies vaccine or human rabies immune globulin. That sentence is easy to overlook, but it changes the interpretation of the alert. This is not a rationing notice. It is a quality-control and preparedness notice: assess risk correctly, give the right products to the right patients, administer them in the right places and on the right schedule, and avoid creating preventable demand through errors.

What the CDC is — and is not — saying

• It is saying: multiple jurisdictions have seen more concerning animal exposures and more use or misuse of preventive treatment.
• It is not saying: human rabies infections are surging nationwide.
• It is saying: clinicians should involve public-health authorities when exposure risk is uncertain.
• It is not saying: every contact with a wild animal automatically requires vaccination.
• It is saying: correct PEP is lifesaving when indicated and should be delivered without avoidable administration errors.

Why a rare disease can generate so much medical activity

Rabies prevention is built around an uncomfortable fact: waiting for symptoms is not a safe strategy. The incubation period can vary, and once neurologic symptoms emerge the disease is overwhelmingly fatal. As a result, the health system has to make preventive decisions based on the exposure event — the animal species, local rabies patterns, the nature of contact, wound severity, vaccination history and whether the animal can be observed or tested — rather than waiting for a patient to become ill.

That creates a broad funnel. CDC estimates that about 1.4 million people in the United States seek medical care each year after animal contact and undergo evaluation for possible rabies exposure. Roughly 100,000 ultimately receive PEP. In other words, the visible burden of rabies in American health care is mostly preventive: phone calls to health departments, animal-control responses, laboratory testing, emergency or urgent-care visits, wound management, vaccine appointments and, for previously unvaccinated patients, administration of human rabies immune globulin.

In the United States, rabies is primarily a wildlife problem. Bats, raccoons, skunks and foxes are among the animals most often associated with rabies surveillance and exposure risk.

The wildlife ecology matters. Domestic dog rabies has been pushed to the margins in the United States through vaccination and control programs, while wildlife reservoirs remain. CDC’s national overview says more than 90% of reported animal rabies cases are in wildlife. Bats are especially important because rabid bats are found throughout the continental United States and a bat bite can be small enough to escape notice. A 2026 CDC report on two 2024 deaths in Minnesota and California found that both patients had recognized bat encounters but did not seek medical evaluation, bat testing or PEP. The lesson was not that every bat is rabid; it was that a seemingly minor encounter can deserve expert review.

At the same time, overreaction has costs. Most animal encounters do not represent rabies transmission. The CDC advisory specifically tells clinicians to confirm that a meaningful exposure occurred and to use local public-health expertise. In general, PEP is not recommended when an appropriate observation period is available for certain domestic animals, when rabies testing is negative, or when health officials determine that the circumstances do not create a rabies risk. That is why a good response is neither panic nor dismissal. It is disciplined triage.

PEP works, but it is more complicated than “getting a rabies shot”

For someone who has never previously been vaccinated against rabies, standard PEP has several parts. Immediate wound cleansing comes first. CDC advises thorough washing with soap and water; its September alert tells the public to wash a possible exposure wound for 15 minutes. Medical treatment then combines human rabies immune globulin, or HRIG, with a series of rabies vaccine doses. HRIG supplies immediate antibodies near the site where the virus may have entered, while the vaccine trains the patient’s immune system to generate its own response.

The details matter. HRIG is normally infiltrated into and around identifiable wounds to the extent anatomically feasible, with remaining volume given intramuscularly away from the vaccine site. The first vaccine dose and HRIG should never be placed in the same syringe or anatomical site. For a previously unvaccinated, immunocompetent person, vaccine is generally given on days 0, 3, 7 and 14. People who were previously vaccinated do not receive HRIG and instead generally receive vaccine on days 0 and 3. People with immune compromise may require a five-dose regimen and confirmation that their immune response is adequate.

Rabies PEP is a coordinated regimen, not a single injection. Wound care, immune globulin and vaccine must be used according to prior vaccination status and exposure risk.

That complexity explains why the CDC devoted much of the new advisory to errors. Reported problems include injecting vaccine in the gluteal area, failing to infiltrate HRIG into the wound, giving HRIG and vaccine at the same site, forgetting HRIG when it is indicated, giving HRIG to someone who was already vaccinated, misclassifying immune status, using the wrong vaccine schedule and unnecessarily restarting the entire vaccine series after a modest timing deviation.

These are not merely paperwork mistakes. CDC says vaccine delivered in the gluteal area is not considered a valid dose and must be repeated at an appropriate site. It warns that HRIG and vaccine can interfere with one another if administered together at the same site. It also notes that small delays of a few days in the vaccine schedule generally are not a reason to restart the series, while longer deviations warrant consultation. The broader point is that the treatment is highly effective when used correctly, but “more” treatment is not automatically “better” treatment.

The system succeeds by acting before symptoms appear — but that success depends on getting the exposure decision and the treatment details right.

The financial consequences reinforce the need for accuracy. CDC estimates that a typical PEP course can cost between $11,000 and $14,000 per person. Depending on insurance, provider setting and billing, the amount a patient actually owes can vary widely, but the underlying system cost is substantial. In a mass-exposure event, even a small error in deciding who needs treatment can multiply quickly across families, workplaces, schools or groups of people who encountered the same animal.

If you think you were exposed

1. Move away from the animal and avoid additional contact.
2. Wash bites or scratches promptly and thoroughly with soap and water.
3. Contact a clinician or your local or state health department for a rabies risk assessment.
4. Describe the animal, the exact contact, where it occurred and whether the animal is available for testing or observation.
5. Do not capture a wild animal with bare hands. Use animal-control or public-health professionals whenever possible.

Bats are the exposure Americans are most likely to underestimate

For many people, “rabies exposure” brings to mind a dramatic dog attack. Modern U.S. rabies risk often looks less obvious. Bats are the animals most frequently reported with rabies in the United States, according to CDC, and most U.S. rabies deaths are linked to bat exposures. The agency stresses that bats are ecologically valuable and that the overwhelming majority are not rabid. The problem is that contact can be subtle: a small tooth can leave little evidence, and an encounter inside a room can be difficult to reconstruct later.

A bat seen outdoors at a distance is not, by itself, an exposure. The concern begins with direct contact or a circumstance in which contact may have occurred and cannot be reliably ruled out. Public-health assessment is particularly important when a person was asleep, very young, impaired or otherwise unable to give a confident account of what happened. The response can include safe capture and laboratory testing of the bat when feasible, which may allow people to avoid unnecessary PEP if the animal tests negative.

Indoor bat encounters can be difficult to interpret because a bite may be small and direct contact is not always obvious. Public-health officials can help determine whether testing or PEP is appropriate.

The public-health message therefore has two parts that can sound contradictory but are not: do not demonize bats, and do not shrug off potential contact. Killing bats indiscriminately is not a prevention strategy, and it can damage ecosystems. Avoid touching them, keep living spaces sealed where practical, call animal control or wildlife professionals when removal is needed, and seek expert advice after possible contact. Those steps protect people without turning a preventable medical risk into a wildlife panic.

Why local health departments are central to the response

Rabies is one of the clearest examples of why local public-health knowledge still matters in an era of national medical guidance. The risk attached to a raccoon in one region may not be identical to the risk attached to the same species elsewhere. Wildlife rabies variants have geographic patterns. Local laboratories know what animals are being submitted and testing positive. Animal-control agencies know whether an animal can be located, confined or observed. State and local health departments can connect those facts to the clinical decision about PEP.

That is why CDC repeatedly directs clinicians toward state, local, tribal and territorial health authorities rather than presenting a one-size-fits-all flowchart for the public. A person who searches the internet after a bite may find broad rules, but the most useful decision often depends on facts that are local and time-sensitive: species, local rabies activity, whether the animal had abnormal behavior, the type of exposure and whether reliable testing is possible.

Rabies response sits at the intersection of human medicine, veterinary medicine, laboratories and local animal control.

This is also why the current advisory is a “One Health” story even if the phrase never reaches most patients. Preventing a human death may require a veterinarian, an animal-control officer, a laboratory scientist, an emergency physician, a pharmacist and a public-health epidemiologist to make a sequence of correct decisions. When exposures rise, weak links become easier to see. A delay in animal testing can push a clinician toward precautionary treatment. A missed vaccination history can lead to unnecessary HRIG. A poorly documented wound can complicate correct infiltration. An unavailable local expert can turn a nuanced case into an expensive emergency-department decision.

What is driving the increase? The CDC has not declared one national cause

The temptation with any nationwide alert is to search for one nationwide explanation. The CDC advisory does not provide one. It says several high-profile outbreaks and mass-exposure events have underscored the need for careful risk assessment, and it reports increases in multiple jurisdictions. It does not say that a single viral change, animal reservoir, weather pattern or behavioral trend explains the national signal.

That uncertainty is editorially important. A 17% increase in inquiries to CDC can reflect more true exposures, more complex events, greater awareness, more requests for consultation, or a mixture of those factors. Higher vaccine and HRIG utilization can reflect more people who genuinely need PEP, more precautionary treatment, administration errors that require correction, or local clusters. National product-use data alone cannot tell readers which explanation dominates.

The national alert aggregates local signals. CDC has not identified a single nationwide cause for the increase in inquiries and prophylaxis use.

It is therefore too early to say that America is experiencing a fundamentally new rabies era. The more defensible conclusion is narrower: enough jurisdictions are seeing enough unusual exposure and treatment activity that CDC wants health systems to tighten their procedures now. Public-health advisories often work this way. They do not wait for a disaster to become visible in mortality statistics; they intervene when operational signals suggest that prevention could start failing.

Four misconceptions that can make rabies prevention harder

“No bite mark means no risk.”

Not always. Bat bites can be difficult to see, and scratches or saliva contact with broken skin can matter. The circumstances of the encounter determine whether a formal assessment is needed.

“Any wild-animal contact means vaccines.”

No. Species, local epidemiology, the type of contact, animal testing and observation can all change the recommendation. Health departments help determine who actually needs PEP.

“If a dose is late, the whole series starts over.”

Usually not for a delay of only a few days. CDC says modest deviations are generally not concerning; longer disruptions should be reviewed with public-health professionals.

“The current alert means vaccine is running out.”

CDC explicitly says there is no current U.S. shortage of human rabies vaccine or immune globulin. Appropriate use still matters because unnecessary treatment adds cost and pressure.

When an animal can be safely captured by professionals, testing or observation can sometimes resolve uncertainty and prevent unnecessary treatment.

The cost problem is real, but fear of the bill should not delay urgent evaluation

The CDC’s estimate of $11,000 to $14,000 for a typical PEP course is striking because rabies treatment often begins in an emergency setting, when patients have little time to compare prices. Hospital facility fees, HRIG dosing by body weight, vaccine administration and multiple return visits can all contribute to the total. Insurance coverage and patient liability differ, and the advisory does not attempt to predict an individual’s out-of-pocket cost.

That financial reality makes accurate risk assessment even more important. The best way to reduce avoidable spending is not to discourage people from seeking help after a credible exposure. It is to make sure they reach clinicians and public-health specialists who can determine whether PEP is truly needed and then deliver it correctly. A person who delays because of cost can lose the prevention window; a person who receives unnecessary or incorrectly administered treatment can incur large costs without added benefit.

PEP can be expensive. The CDC uses that cost as another reason to improve assessment and administration — not as a reason to delay care after a genuine exposure.

For health systems, the alert also suggests a practical checklist: keep protocols available in emergency departments and urgent-care settings; involve pharmacists; verify prior rabies vaccination; calculate HRIG by weight and product concentration; document wound infiltration; avoid gluteal vaccine administration; and know how to reach the jurisdiction’s health department. Rabies is uncommon enough that many clinicians may go long periods without treating a case. Standardization helps compensate for that lack of routine experience.

What happens after a possible exposure

The pathway can look confusing from the outside, so it helps to separate the steps. The sequence below is not a substitute for medical advice; it is a map of the questions public-health and clinical teams are trying to answer.

Step 1

Clean the wound

Immediate, thorough washing reduces contamination and is part of rabies prevention even before the final PEP decision is made.

Step 2

Define the exposure

Clinicians ask what species was involved, whether there was a bite or scratch, whether saliva reached broken skin or mucous membranes, and whether the person can reliably describe the event.

Step 3

Assess the animal

Public-health and animal-control teams consider local rabies patterns and whether the animal can be observed or tested safely.

Step 4

Check the patient

Prior rabies vaccination and immune status determine which products and schedule are appropriate if PEP is needed.

Step 5

Deliver PEP correctly

For previously unvaccinated people, HRIG is placed appropriately around wounds and vaccine is administered at approved sites on the recommended schedule.

Rabies prevention is a chain: the patient, clinician, public-health agency, animal control and laboratory may all contribute to the final decision.

Pet vaccination is still one of the quiet pillars of human prevention

The American rabies story changed dramatically once routine dog vaccination and animal-control programs reduced the role of domestic dogs as a reservoir. That success can make pet vaccination feel routine or even optional, but the current advisory is a reminder that household animals form a protective barrier between people and infected wildlife. A vaccinated dog or cat that tangles with a wild animal creates a different risk-management problem from an unvaccinated pet with the same encounter.

CDC’s advice to the public is straightforward: keep pets current on rabies vaccination and, when possible, prevent them from interacting with wildlife. If a pet has contact with a wild or sick-acting animal, owners should contact a veterinarian and public-health or animal-control authorities rather than trying to resolve the situation themselves. Local rules govern quarantine, booster vaccination and observation after animal exposures, so the details vary by jurisdiction.

Routine pet vaccination remains one of the most effective ways to keep wildlife rabies from becoming a human household emergency.

This is where the contrast between the United States and much of the world remains stark. In many countries, dog-mediated rabies remains the main threat to humans. In the U.S., wildlife reservoirs dominate. That difference is a public-health achievement, but not a reason for complacency. It means the prevention system has shifted rather than disappeared: vaccinate domestic animals, monitor wildlife, investigate exposures and ensure rapid access to prophylaxis when risk is real.

The signal to watch next is not just case counts

In the coming weeks, the most informative indicators will include whether additional states report clusters, whether product utilization remains elevated, whether health departments continue seeing administration mistakes, and whether CDC updates its guidance or supply assessment. Because the agency currently reports no national shortage, a change in supply language would be significant. So would evidence that the increase is being driven by a particular animal reservoir or a defined cluster of mass-exposure events.

Human case counts alone are a lagging and incomplete measure of whether the prevention system is under strain. The whole purpose of PEP is to keep those counts low. A successful response can therefore look paradoxical: more consultations, more testing and more correctly administered prophylaxis, followed by very few human infections. That would not mean the alert was unnecessary. It would mean the safety net absorbed the pressure.

The useful response to the CDC alert is neither alarm nor indifference. It is practical vigilance around wildlife, pets and timely medical assessment.

For the public, the message is simpler. Keep distance from wildlife. Do not handle sick or strangely behaving animals. Keep pets vaccinated. After a possible exposure, wash the wound and get expert advice promptly. If PEP is recommended, make sure the treating team knows whether you have ever received rabies vaccine before and follows the current schedule carefully. And if a bat encounter feels ambiguous, do not rely on the absence of an obvious bite mark as the only reason to dismiss it.

Rabies is rare in America because prevention happens before the disease becomes visible. The CDC’s September alert is a reminder that this success is not automatic. It depends on thousands of small, correct decisions made in homes, veterinary offices, health departments, laboratories and clinics — exactly when the risk feels uncertain and before anyone gets sick.

Sources and further reading

1. CDC Health Alert Network: Nationwide Increase in Reported Human Rabies Exposures — Rabies Post-exposure Prophylaxis Administration, September 10, 2026.
2. CDC: Rabies Post-exposure Prophylaxis Guidance, updated September 10, 2026.
3. CDC: Rabies in the United States — Protecting Public Health.
4. CDC: Preventing Rabies from Bats.
5. CDC MMWR: Human Rabies Deaths — Minnesota and California, 2024, published January 15, 2026.
6. dvm360: CDC reports increase in rabies exposures and PEP use in multiple U.S. jurisdictions, September 2026.