No federal law in the United States makes it a crime to skip your child’s vaccinations. But the answer gets complicated fast when you look at state laws, school enrollment rules, and courtroom battles. Is it illegal to not vaccinate your child? That depends entirely on where you live and what exemptions your state allows.
Here’s what surprises most parents: all 50 states require certain vaccinations for school attendance, yet only a handful actually punish parents with fines or legal consequences for refusing. The real pressure comes through school exclusion, not handcuffs.
Every state handles this differently. Some let you opt out with a simple form. Others have closed nearly every loophole. A few states allow only medical exemptions, period.
This article breaks down the 2026 legal status of childhood vaccination across the country. You’ll learn which states are strictest, what exemptions exist, whether CPS can get involved, and how family courts handle disagreements between parents.
Is It Illegal to Not Vaccinate Your Child
Not vaccinating your child is not a criminal offense under federal law. No parent in the United States faces arrest solely for refusing childhood vaccines. The federal government sets recommended vaccination schedules through the CDC and ACIP, but it does not enforce them with criminal penalties.
The legal reality is more about access than punishment. States tie vaccination to specific privileges, mainly public school enrollment. If your child doesn’t meet the vaccine requirements and you don’t qualify for an exemption, your child simply can’t attend public school. That’s the enforcement mechanism.
Think of it like a driver’s license. Nobody forces you to get one, but you can’t legally drive without it. Vaccination works similarly for school access in most states.
| Legal Status | Details |
|---|---|
| Federal criminal law | No law criminalizing vaccine refusal |
| State criminal penalties | Extremely rare; most states use school exclusion |
| School enrollment | All 50 states require vaccines for public school |
| Exemptions available | Varies by state: medical, religious, philosophical |
Some states have tightened their rules significantly in recent years. California, New York, West Virginia, Mississippi, and Maine now allow only medical exemptions. In those states, the practical effect is that nearly every child must be vaccinated to attend public or private school.
The bottom line: you won’t face criminal charges for skipping vaccines, but you could face real consequences for your child’s education and, in rare cases, family court involvement.
Is Vaccination Mandatory in the US
Vaccination is not federally mandatory in the US for children or adults. There is no single national law requiring any American to receive a vaccine. The federal government recommends vaccines and funds immunization programs, but enforcement happens entirely at the state level.
Every state has its own set of vaccination requirements. These are tied almost exclusively to school and daycare enrollment. The legal basis for state vaccine mandates goes back to the 1905 Supreme Court case Jacobson v. Massachusetts, which upheld a state’s authority to enforce compulsory vaccination during a smallpox outbreak.
In 1922, the Supreme Court reinforced this in Zucht v. King, ruling that school vaccination mandates do not violate the 14th Amendment. These two decisions form the legal backbone of every state vaccination law on the books in 2026.
- The CDC publishes the recommended childhood vaccination schedule
- States decide which vaccines to require and which exemptions to allow
- No federal agency can force vaccination on any individual
- Military service members may face separate federal vaccine mandates
So while vaccination is effectively mandatory for school attendance in most states, it’s not mandatory in the way that paying taxes or registering for Selective Service is mandatory. The distinction matters because the penalties are different. You won’t go to prison, but your child might not be allowed in the classroom.
Can a Parent Refuse Vaccines for Their Child
Yes, a parent can refuse vaccines for their child in every US state, but the consequences of that refusal vary dramatically. Every state provides at least one type of exemption from vaccination requirements. The question isn’t whether you can refuse; it’s what happens after you do.
In states with broad exemption policies, refusal is straightforward. You file a form claiming a religious or philosophical objection, and your child attends school without vaccines. In strict states like California or Mississippi, only a licensed physician’s medical exemption will do.
Parental rights in healthcare decisions are well-established in American law. The Supreme Court recognized parents’ fundamental right to direct their children’s upbringing in cases like Pierce v. Society of Sisters (1925) and Wisconsin v. Yoder (1972).
| State Category | What Happens When You Refuse |
|---|---|
| States with philosophical exemptions | File a simple form; child stays in school |
| States with religious exemptions only | Must claim sincere religious belief |
| States with medical exemptions only | Need a doctor’s written approval |
| During disease outbreaks | Unvaccinated children may be temporarily excluded |
One wrinkle that catches parents off guard: even if you have a valid exemption, your child can be pulled from school during a disease outbreak. If there’s a measles case in the district, unvaccinated kids go home until the threat passes. That’s true regardless of your exemption type.
Key Takeaway: Refusing vaccines is a legal right in every state, but the practical consequences range from zero inconvenience to complete exclusion from public and private schools, depending on where you live.
Do You Have to Vaccinate Your Child by Law
No single law in the United States requires you to vaccinate your child in all circumstances. State laws require vaccination for specific purposes, mainly school enrollment and childcare attendance. Outside of those settings, there is no general legal duty to vaccinate.
This is a distinction that trips people up constantly. “Required for school” and “required by law” feel the same, but they’re not. If you homeschool your child in most states, the vaccination requirements either don’t apply or are much easier to sidestep.
Here’s how the legal obligation breaks down in practice:
- Public school enrollment: Vaccination required in all 50 states (with exemptions)
- Private school enrollment: Most states apply the same requirements as public schools
- Daycare and preschool: Most states require vaccination for licensed facilities
- Homeschool: Requirements vary widely; many states impose no vaccine rules on homeschoolers
- General existence: No state requires vaccination just for living within its borders
The legal requirement is conditional, not absolute. You must vaccinate if you want your child in a particular setting. If you choose alternative educational paths, the legal pressure drops significantly in many states.
That said, a handful of states have moved toward stricter homeschool vaccination tracking. As of 2026, these efforts remain limited, but the trend is worth watching if you’re planning your child’s education around vaccination concerns.
What Happens If You Don’t Vaccinate Your Child
The most common consequence of not vaccinating your child is exclusion from public school. That’s the primary enforcement tool in every state. You won’t get a knock on the door from police. You’ll get a letter from the school district.
Here’s the typical chain of events. You try to enroll your child in kindergarten or transfer to a new school. The school asks for immunization records. If the records are incomplete and you don’t have an approved exemption, enrollment is denied.
In some states, you may receive a provisional enrollment period, usually 30 to 90 days, to catch up on missing vaccines. If you don’t comply within that window, your child is excluded.
| Consequence | How Common | States Where This Applies |
|---|---|---|
| School enrollment denied | Very common | All 50 states |
| Temporary outbreak exclusion | Common during outbreaks | All 50 states |
| Fines | Rare | Very few states |
| CPS investigation | Very rare | Only in extreme circumstances |
| Criminal charges | Essentially unheard of | No documented modern cases for vaccine refusal alone |
Beyond school, unvaccinated children may face restrictions at summer camps, sports leagues, and organized childcare. Some pediatricians also refuse to see unvaccinated patients, citing the risk to other children in the waiting room.
The social and practical consequences tend to be more impactful than the legal ones. Your child might miss school during outbreaks, lose access to extracurricular activities, or face limitations when traveling internationally.
Penalties for Not Vaccinating Your Child
Direct legal penalties for not vaccinating your child are extremely rare in the United States. Most states rely on school exclusion rather than fines, charges, or other punitive measures. There is no standardized penalty system across states.
In very limited circumstances, parents have faced fines. New York City, during the 2019 measles outbreak, issued emergency orders requiring vaccination in certain zip codes. Parents who refused could face fines of up to $1,000 per violation. That situation was unusual and tied to a declared public health emergency, not routine vaccine refusal.
A few key points about penalties in 2026:
- No state imposes automatic fines for general vaccine refusal
- Emergency orders during outbreaks can create temporary penalties
- School exclusion is the default “penalty” in every state
- Homeschooling eliminates most school-related consequences
- Fraudulent exemption claims can result in separate legal trouble
The penalty that hits hardest for most families isn’t financial. It’s logistical. Rearranging your child’s education, finding a pediatrician willing to see unvaccinated patients, and dealing with outbreak exclusions create real burdens even when no fine is involved.
In states that have eliminated non-medical exemptions, parents sometimes obtain fraudulent medical exemptions. California has prosecuted doctors who sold fake medical exemptions, and parents who knowingly use fraudulent documents could face charges for fraud, not for vaccine refusal itself.
Key Takeaway: Penalties for vaccine refusal are almost never about fines or jail time. The real penalty is your child’s exclusion from school and certain activities, which forces families to find alternative arrangements.
Can You Go to Jail for Not Vaccinating Your Child
No, you cannot go to jail solely for refusing to vaccinate your child. There are no criminal statutes in any US state that impose jail time for vaccine refusal. This is one of the most common fears among vaccine-hesitant parents, and it simply doesn’t match reality.
Criminal prosecution for vaccine refusal has no modern precedent. Law enforcement does not arrest parents for skipping the DTaP or MMR shots. The legal system treats vaccination as a public health compliance issue, not a criminal matter.
There’s an important exception to understand, though. If a parent’s refusal to provide medical care, including vaccination, rises to the level of medical neglect under state child abuse statutes, CPS could intervene. In theory, extreme cases of medical neglect can lead to criminal charges. But prosecution based solely on vaccine refusal has not happened in any documented modern case.
| Scenario | Jail Risk |
|---|---|
| Simply refusing vaccines | No risk |
| Refusing vaccines and child becomes seriously ill | Possible CPS involvement, no jail |
| Using a fraudulent medical exemption | Possible fraud charges |
| General medical neglect finding | Possible criminal charges (extremely rare) |
The distinction between “refusing vaccines” and “committing medical neglect” is vast. Courts have consistently treated vaccine refusal as a parental choice, not neglect, when parents are otherwise providing adequate medical care.
If someone tells you that parents are being thrown in jail for not vaccinating, that claim is not supported by any verifiable case law as of 2026.
Can CPS Take Your Child for Not Vaccinating
CPS will not take your child simply because you skipped vaccinations. Child Protective Services investigates allegations of abuse and neglect, and routine vaccine refusal by itself does not meet the legal definition of neglect in any state.
For CPS to intervene, there typically needs to be a pattern of medical neglect that goes far beyond vaccination. If a child is denied all medical care, is suffering from untreated illnesses, or has serious unmet health needs, CPS might open a case. Vaccine refusal alone, when the child is otherwise healthy and receiving medical attention, is not grounds for removal.
That said, vaccination can become a factor in existing CPS cases. If a family is already under investigation for other reasons, a caseworker might note the lack of vaccinations as part of a broader pattern. On its own, it’s not enough to trigger removal.
- CPS removal requires evidence of immediate danger to the child
- Vaccine refusal does not constitute immediate danger under any state statute
- A healthy, well-cared-for child will not be removed for missing vaccines
- CPS caseworkers do not proactively search for unvaccinated children
Some parents worry that pediatricians will report them to CPS for refusing vaccines. While doctors can report suspected neglect, professional guidelines from the American Academy of Pediatrics specifically advise against treating vaccine refusal alone as reportable neglect.
The fear of CPS involvement over vaccines is widespread but largely unfounded in 2026. Stay focused on providing overall good medical care for your child, and this concern is extremely unlikely to materialize.
Vaccine Exemptions by State
Every US state offers at least a medical exemption from vaccination requirements. Beyond that, exemption availability varies enormously. Some states make opting out as simple as signing a form. Others require a doctor’s sworn statement and review by the state health department.
As of 2026, the three types of vaccine exemptions recognized across various states are medical, religious, and philosophical (also called personal belief exemptions).
| Exemption Type | States Offering It (2026) |
|---|---|
| Medical only | California, New York, West Virginia, Mississippi, Maine, Connecticut |
| Medical and religious | Approximately 28 states |
| Medical, religious, and philosophical | Approximately 16 states including Texas, Ohio, Michigan, Colorado, Oregon, Wisconsin |
The trend over the past decade has moved toward fewer exemptions. New York removed its religious exemption in 2019. Maine did the same in 2020. Connecticut followed in 2021. More states have considered similar legislation, though none have passed new restrictions in the 2025-2026 legislative sessions.
States with philosophical exemptions tend to have higher opt-out rates. Oregon, for example, has historically had some of the highest non-medical exemption rates in the country. States that allow only medical exemptions typically see vaccination rates above 95%.
If you’re trying to determine your state’s policy, check your state health department’s website directly. The rules can change during any legislative session, and what applied in 2024 may not apply today.
Key Takeaway: Your exemption options depend entirely on your state. Six states allow only medical exemptions, roughly 28 allow religious exemptions, and about 16 allow philosophical or personal belief exemptions as of 2026.
Religious Exemption for Vaccines
A religious exemption allows parents to opt out of vaccination requirements based on their sincerely held religious beliefs. Approximately 44 states and Washington, D.C., recognized religious vaccine exemptions as of early 2026. The six states that do not are California, New York, West Virginia, Mississippi, Maine, and Connecticut.
The process for claiming a religious exemption varies by state. Some states require only a signed statement. Others require notarized affidavits. A few demand that parents explain their specific religious objection or attend an education session about vaccine risks.
Important details about religious exemptions:
- Most states do not require membership in an organized religion
- A “sincerely held belief” is usually sufficient
- Some states allow school officials to question the sincerity of the claim
- No state requires parents to name a specific denomination or church
- Religious exemptions can be revoked during declared public health emergencies
New York’s 2019 removal of its religious exemption generated major legal battles. Several families challenged the law, arguing it violated their First Amendment rights. Federal courts upheld the law, ruling that there is no constitutional right to a religious exemption from vaccination requirements. The Second Circuit’s decision in F.F. v. State of New York reinforced that states have broad authority to set vaccination policy.
If your state offers a religious exemption, the key is demonstrating sincerity. You don’t need to belong to a specific faith community. You do need to show that your objection is genuinely rooted in religious or spiritual conviction, not just personal preference dressed up in religious language.
Medical Exemption for Vaccines
A medical exemption is the only type of vaccine exemption available in every single US state. It applies when a licensed physician determines that a specific vaccine would be medically harmful to a particular child. Common qualifying conditions include severe allergies to vaccine components, compromised immune systems, and certain chronic illnesses.
The process for obtaining a medical exemption tightened considerably after states discovered widespread abuse. In California, Senate Bill 714 (passed in 2019, expanded in subsequent years) gave the state health department authority to review and reject medical exemptions deemed fraudulent or unsupported by medical evidence.
| State | Medical Exemption Process |
|---|---|
| California | Must be reviewed and approved by the state health department |
| New York | Physician must certify specific contraindication |
| Mississippi | Requires review by state health officer |
| West Virginia | Board of Health review required |
| Most other states | Physician’s written statement is sufficient |
As of 2026, California’s approach is the most restrictive. Doctors must submit detailed medical justification for each exemption, and the California Department of Public Health can revoke exemptions it deems unjustified. Several physicians in California have lost their medical licenses for issuing fraudulent exemptions.
If your child has a genuine medical condition that makes vaccination risky, the medical exemption process should be straightforward. Your pediatrician or specialist will document the specific medical reason, the affected vaccines, and the expected duration of the exemption. Some medical exemptions are temporary (e.g., during immunosuppressive therapy) while others are permanent.
Philosophical Exemption Vaccines
A philosophical exemption, also called a personal belief exemption, lets parents refuse vaccines based on personal, moral, or non-religious philosophical objections. About 16 states offer this type of exemption as of 2026, making it the least common of the three exemption categories.
States that offer philosophical exemptions include Texas, Ohio, Michigan, Colorado, Oregon, Wisconsin, Arizona, Idaho, Louisiana, Minnesota, North Dakota, Oklahoma, Pennsylvania, Utah, Washington, and Wisconsin. The specific name and process differ by state.
- Texas calls it a “conscientious exemption”
- Oregon calls it a “non-medical exemption” and requires an education module
- Michigan requires parents to complete a vaccine education session at a local health department before receiving the exemption
- Colorado requires parents to submit a certificate of completion from an immunization education module or provide a signed statement from a healthcare provider
The trend nationally has been to add friction to the philosophical exemption process. States aren’t necessarily removing the exemption, but they’re making it harder to claim. Oregon’s 2013 requirement that parents watch an educational video before filing their exemption reduced the opt-out rate by about one-third.
Philosophical exemptions are politically controversial. Public health officials argue they create pockets of unvaccinated children that enable outbreaks. Parental rights advocates argue they protect bodily autonomy and informed consent.
If you live in a state with a philosophical exemption, expect the process to require at least some documentation. The days of checking a box on a school form with no questions asked are fading in most jurisdictions.
Key Takeaway: Philosophical exemptions exist in only about 16 states, and most of those states are making the process harder. If this exemption matters to you, verify your state’s current requirements before relying on it.
States with No Vaccine Exemptions
Six states currently allow only medical exemptions for childhood vaccination, effectively eliminating religious and philosophical opt-outs. These states are California, New York, West Virginia, Mississippi, Maine, and Connecticut. In these states, only a doctor’s determination that a vaccine is medically harmful to a specific child will waive the requirement.
This is the strictest category of vaccine law in the country. If you live in one of these states and your objection to vaccination is religious, philosophical, or based on personal preference, you have no legal pathway to enroll your child in public or private school without completing the required vaccinations.
| State | Year Non-Medical Exemptions Removed | Key Law |
|---|---|---|
| Mississippi | Never allowed non-medical exemptions | Miss. Code 41-23-37 |
| West Virginia | Never allowed non-medical exemptions | W. Va. Code 16-3-4 |
| California | 2016 | SB 277 |
| New York | 2019 | A2371 |
| Maine | 2020 | LD 798 |
| Connecticut | 2021 | Public Act 21-6 |
Mississippi and West Virginia have never allowed non-medical exemptions since their vaccine laws were enacted. The other four states all removed their religious or philosophical exemptions within the past decade, usually in response to measles outbreaks.
Parents in these states who refuse vaccination have limited options. Homeschooling is the primary alternative. Some parents relocate to states with broader exemptions. Others have pursued legal challenges, but courts have consistently upheld these laws as valid exercises of state public health authority.
The vaccination rates in these six states are among the highest in the country, often exceeding 95% for required childhood vaccines.
States That Require Vaccination for School
All 50 US states, plus Washington, D.C., require children to receive specific vaccinations before enrolling in public school. This has been the case for decades. The required vaccines typically align with the CDC’s recommended immunization schedule, though each state decides its own specific list.
The most commonly required vaccines for school enrollment across all states include:
- DTaP (diphtheria, tetanus, pertussis)
- IPV (polio)
- MMR (measles, mumps, rubella)
- Hepatitis B
- Varicella (chickenpox)
Some states require additional vaccines beyond this core list. For example, several states now require the meningococcal vaccine for middle school or high school entry.
| Vaccine | States Requiring for K-12 Enrollment |
|---|---|
| DTaP | All 50 states |
| Polio (IPV) | All 50 states |
| MMR | All 50 states |
| Hepatitis B | All 50 states |
| Varicella | 49 states (varies for older students) |
| Meningococcal | Approximately 35 states for 7th-12th grade |
| Hepatitis A | Approximately 20 states |
| HPV | Only Washington, D.C., Hawaii, Rhode Island, and Virginia require or mandate offering |
Private schools in most states must follow the same vaccination requirements as public schools. A common misconception is that private schools are exempt from vaccine mandates. In most states, they’re not. However, some states give private schools slightly more flexibility in how they enforce the rules.
The enforcement mechanism is consistent: if your child doesn’t have documented proof of vaccination or a valid exemption on file, the school cannot admit them. Schools that fail to enforce these requirements can face penalties from the state health department.
School Vaccination Requirements 2026
School vaccination requirements in 2026 remain largely consistent with prior years, though several states have updated their policies. The core vaccines required for school enrollment haven’t changed, but the administrative process, exemption rules, and enforcement approaches continue to shift.
Key 2026 updates parents should know about:
- Several states have added or are considering adding COVID-19 vaccination to the school-required list, though this remains politically contentious and few states have finalized such requirements
- California continues to crack down on fraudulent medical exemptions through its state review process
- Colorado’s revised exemption process, implemented in 2022, now requires parents to complete an online education module or obtain a healthcare provider’s signature before submitting a non-medical exemption
- Some states have extended provisional enrollment periods to accommodate pandemic-related vaccination delays
The vaccination schedule recommended by the CDC for the 2025-2026 school year includes doses of DTaP, IPV, MMR, Hepatitis B, Varicella, and in many states, Tdap boosters and meningococcal vaccines for adolescents.
Parents should check with their specific school district for the most current requirements. State health departments publish annually updated immunization guides for schools, and these are the most reliable source for 2026 requirements.
One practical tip: if your child is behind on vaccinations due to pandemic disruptions, most states offer catch-up schedules and provisional enrollment windows. Don’t assume your child will be automatically excluded. Contact your school’s health office to discuss options before the enrollment deadline.
Key Takeaway: The 2026 school vaccination landscape is stable for core vaccines, but exemption processes are getting stricter in many states, and a few are considering adding newer vaccines to the required list.
Unvaccinated Children and Public School
Unvaccinated children can attend public school only if they have a valid exemption on file. Without an approved exemption, enrollment will be denied. This rule applies in all 50 states with no exceptions.
The practical reality for unvaccinated children in public school involves several layers:
- Enrollment: Blocked without vaccination records or an exemption
- Outbreak exclusion: Even with a valid exemption, children can be sent home during disease outbreaks
- Duration of exclusion: Outbreak exclusions can last 21 days or longer depending on the disease
- Make-up work: Schools are generally required to provide assignments during exclusion periods
Outbreak exclusion policies hit unvaccinated children hard during active disease events. During the 2024 measles outbreaks in several US cities, unvaccinated children with valid exemptions were excluded from school for up to three weeks at a time. Parents received little advance notice, and the disruption to their children’s education was significant.
Some school districts track vaccination and exemption data more aggressively than others. Large urban districts tend to enforce requirements strictly. Rural districts sometimes have more relaxed enforcement, though they’re still legally required to comply.
If you’re planning to send an unvaccinated child to public school, you need an exemption strategy that complies with your state’s law. Filing the wrong type of exemption, missing a deadline, or submitting incomplete paperwork can result in your child being turned away on the first day of school.
Child Custody and Vaccination Disputes
Vaccination has become a flashpoint in custody disputes, particularly when divorced or separated parents disagree about whether to vaccinate their children. Family courts across the country have been forced to weigh in on this question with increasing frequency.
When parents share legal custody and disagree about vaccination, either parent can petition the court to make the decision. Courts generally apply the “best interest of the child” standard. In the majority of documented cases, judges have sided with the parent who wants to vaccinate.
| Factor Courts Consider | How It Typically Weighs |
|---|---|
| CDC vaccination recommendations | Heavily in favor of vaccination |
| Child’s specific medical conditions | Can favor either side |
| State vaccination requirements | Favors the pro-vaccination parent |
| Parent’s religious beliefs | Considered but rarely overrides health factors |
| Expert medical testimony | Usually supports vaccination |
Several notable court decisions illustrate the trend. In a widely reported 2015 Michigan case, a mother was jailed for contempt after refusing to comply with a court order to vaccinate her child. In New York family courts, judges have repeatedly ordered vaccination over one parent’s objection when the other parent and the child’s pediatrician both supported it.
The legal standard isn’t absolute. If a child has a documented medical condition that makes a specific vaccine risky, courts will consider that evidence. But general anti-vaccine sentiment, without specific medical evidence for that particular child, rarely wins in family court.
If you’re in a custody dispute and vaccination is an issue, the parent advocating for vaccination has a strong legal position in nearly every jurisdiction. Courts view following the CDC schedule as part of providing adequate medical care for a child.
Frequently Asked Questions
Can you get arrested for not vaccinating your child?
No, you cannot be arrested solely for refusing to vaccinate your child.
No US state has a criminal statute that makes vaccine refusal an arrestable offense.
The legal consequences are limited to school exclusion and, in extremely rare cases, CPS involvement if broader medical neglect is alleged.
Which states do not allow any vaccine exemptions?
Six states allow only medical exemptions: California, New York, West Virginia, Mississippi, Maine, and Connecticut.
These states do not permit religious or philosophical exemptions.
A licensed physician must certify a medical reason for each child.
Can an unvaccinated child attend public school?
An unvaccinated child can attend public school only with a valid exemption on file.
Without an approved medical, religious, or philosophical exemption (depending on the state), enrollment will be denied.
Even with an exemption, the child can be excluded during disease outbreaks.
Does CPS get involved if you skip your child’s vaccines?
CPS does not investigate families solely because a child is not vaccinated.
Vaccine refusal alone does not meet the legal definition of child neglect in any state.
CPS might note vaccination status if a family is already under investigation for other concerns.
Can a judge order vaccination during a custody dispute?
Yes, a family court judge can order a child to be vaccinated when parents disagree.
Courts apply the “best interest of the child” standard, and most judges follow CDC recommendations.
The parent who opposes vaccination bears the burden of proving it would harm the child.
Know Your State, Know Your Rights
Understanding your state’s vaccination laws gives you the power to make informed decisions for your family. The rules vary dramatically across the country, and what works in Texas won’t fly in California.
Bookmark this page so you can reference the 2026 requirements whenever questions come up. Vaccination laws are a moving target, and staying current is the smartest thing any parent can do.
