
The United States has a complex history with compulsory vaccination, with no official vaccine mandate currently in place. However, vaccination is often compulsory for military enlistment, and hospitals and clinics are increasingly asking their staff to get vaccinated against certain diseases. All states have laws requiring students to be vaccinated against specific contagious diseases before attending school, and there are vaccination requirements for immigrants.
| Characteristics | Values |
|---|---|
| Mandatory Vaccines in the US | No official vaccine mandate currently in place for the United States |
| Vaccination for immigrants | Required for admission or adjustment of status to that of a lawful permanent resident |
| Vaccination for military enlistment | Often compulsory |
| State laws | Varying rules for students attending school and staff working in hospitals and clinics |
| School vaccination requirements | Vary by state, with some requiring certain vaccines and others allowing county public health boards to decide |
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What You'll Learn
- Routine vaccines are recommended for travellers entering the US, but there is no official mandate
- Vaccines are often compulsory for military enlistment
- All states have rules about students needing vaccines to attend school
- Exemptions from school vaccination requirements are linked to rises in vaccine-preventable diseases
- Immigration laws require proof of vaccination against preventable diseases

Routine vaccines are recommended for travellers entering the US, but there is no official mandate
While there are no mandatory vaccines for visitors entering the US, routine vaccines are recommended for travellers. This is to ensure that the spread of diseases among US citizens is regulated. During the COVID-19 pandemic, COVID-19 vaccines were required for all non-immigration travellers until May 12, 2023.
The US has a complex history with compulsory vaccination, particularly in enforcing it domestically and for soldiers during wartime. For example, during the American Revolutionary War, General George Washington required American soldiers to undergo variolation for smallpox. This was due to concerns that the British, who had long practiced it, would use smallpox as a weapon.
Immunizations are often compulsory for military enlistment, and there are vaccination requirements for immigrants and those seeking adjustments to their status. Under the Immigration and Nationality Act (INA), an immigrant who fails to show proof of vaccination against preventable diseases is "inadmissible and therefore ineligible for admission or adjustment of status". The CDC publishes Technical Instructions for Civil Surgeons, which set out the requirements for the immigration medical examination, including a vaccination component.
At a state level, all states have laws requiring students to be vaccinated against specific contagious diseases to attend school. These laws are usually the same for public and private schools, and there are processes in place for students to skip these requirements. However, research has established a link between the rise of vaccine-preventable diseases and non-medical exemptions from school vaccination requirements. This has contributed to the loss of herd immunity within high-vaccine refusal communities and an increasing number of infectious disease outbreaks.
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Vaccines are often compulsory for military enlistment
In the United States, vaccines are often compulsory for military enlistment. The Department of Defense (DoD) already administers 17 different vaccines to service members, outlined in the "Joint Regulation on Immunization and Chemoprophylaxis for the Prevention of Infectious Diseases." These mandatory vaccinations are required before initial entry or basic training. The list of mandatory vaccines includes those against influenza, measles, mumps, smallpox, and diphtheria.
The history of vaccine mandates in the US military dates back to the Revolutionary War when George Washington ordered mandatory inoculation to protect troops in the Continental Army from smallpox. Today, the DoD continues to prioritize the health and safety of its service members through vaccination requirements. The specific vaccines required may vary depending on the military branch and the deployment location. For example, special operations troops at risk for smallpox must arrange to receive the smallpox vaccine from the Centers for Disease Control and Prevention (CDC).
Additionally, the CDC's Adult Vaccine Quiz helps individuals determine which vaccines they may need based on factors such as age, health conditions, and deployment region. Vaccines are easily accessible at doctor's offices or pharmacies and are typically covered by insurance. By receiving the necessary vaccinations, military personnel can protect themselves and their fellow service members, families, and communities.
It is important to note that the availability of certain vaccines to military personnel may change over time. Some vaccines are licensed and generally available, while others may be in development or face challenges in funding or demonstrating effectiveness and safety. Nonetheless, vaccines play a crucial role in maintaining the health and readiness of the US military.
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All states have rules about students needing vaccines to attend school
In the United States, all states have rules and regulations in place that require students to be vaccinated against specific contagious diseases to attend school. These rules are generally consistent across public and private schools, encompassing both the mandated vaccines and the processes for obtaining exemptions.
State laws establish the vaccination requirements that students must fulfil, encompassing not only children in public schools but also those attending private schools and daycare facilities. While the specific vaccines mandated may vary by state, the Public Health Law Program (PHLP) has comprehensively reviewed and compiled these statutes and regulations.
The PHLP's work includes examining state rules, regulations, and health department policies regarding school vaccinations. Additionally, the PHLP has assessed mechanisms for enforcing these requirements and exemptions. This information is vital for parents and healthcare providers, ensuring they remain informed about the necessary vaccinations and any associated processes for exemption.
State laws typically provide medical exemptions, allowing students to opt out of specific vaccine requirements for medical reasons. Some states also offer additional exemptions based on religious or philosophical grounds. However, studies have indicated that vaccine exemptions tend to cluster geographically, resulting in certain communities becoming more vulnerable to disease outbreaks.
To address this issue and promote higher vaccination rates, various strategies have been proposed. These include strengthening the rigour of exemption application processes, increasing submission frequency, and enhancing enforcement and monitoring efforts. By implementing these practices, states can aim for improved vaccination coverage, resulting in lower rates of vaccine-preventable diseases (VPDs).
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Exemptions from school vaccination requirements are linked to rises in vaccine-preventable diseases
In the United States, vaccination requirements for school attendance are set by state and local jurisdictions. These policies include conditions and procedures for exemptions from vaccination requirements. While these exemptions are meant to provide flexibility for parents, they have been linked to a rise in vaccine-preventable diseases.
From the 2019–2020 to the 2022–2023 school year, national coverage with state-required vaccines among kindergarten students declined from 95% to approximately 93%, with some vaccines, such as the measles, mumps, and rubella vaccine (MMR), falling below this range. During the 2023–2024 school year, coverage declined further to less than 93% for all reported vaccines. This decrease in vaccination rates coincided with an increase in exemption rates, which rose to 3.3% during the 2023–2024 school year, the highest ever reported in the United States.
Multiple studies have found a correlation between an increase in local exemption rates and the risk of vaccine-preventable diseases. For example, in Michigan, there was a significant overlap between geographic clusters of non-medical exemptions and pertussis cases. Similarly, in Colorado, the incidence of measles and pertussis in vaccinated children was associated with the frequency of exemptions in the county. School-based outbreaks in Colorado were also linked to higher exemption rates.
Children with exemptions from school vaccination requirements are at an increased risk of contracting and transmitting vaccine-preventable diseases. They can infect others who are too young to be vaccinated, have medical contraindications, or did not develop sufficient immunity from the vaccine. This puts not only the unvaccinated child but also their peers, family members, and the wider community at risk.
To address these concerns, health departments, schools, and healthcare providers must work together to ensure that students are fully vaccinated before enrolling in school. Schools can collaborate with parents to meet vaccination requirements and educate them about the safety and effectiveness of vaccinations. By improving vaccination coverage, we can protect vulnerable individuals and maintain herd immunity, which is crucial for eliminating the endemic transmission of vaccine-preventable diseases.
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Immigration laws require proof of vaccination against preventable diseases
In the United States, immigration laws require proof of vaccination against preventable diseases. This is outlined in the Immigration and Nationality Act (INA) section 212(a)(1)(A)(ii). According to this legislation, immigrants seeking admission or lawful permanent resident status must provide documentation of receiving vaccinations against preventable diseases. The Advisory Committee for Immunization Practices (ACIP) recommends immunizations for the general US population, and the Centers for Disease Control and Prevention (CDC) assesses whether these vaccines are necessary for immigration. The CDC publishes Technical Instructions for Civil Surgeons, which include vaccination requirements for immigration medical examinations.
The CDC has specified criteria for determining which vaccines are required for immigration. These include ensuring the vaccine protects against a disease that has been eliminated or is in the process of being eliminated in the US and that it has the potential to cause an outbreak. The ACIP recommendations are used to identify age-appropriate vaccines for immigrants, and overseas immigrant applicants must receive these vaccines during their medical exam unless they can provide proof of prior vaccination or if the vaccine is not medically advised.
Civil surgeons play a crucial role in the vaccination assessment process. They review vaccination records during the immigration medical examination and administer any missing vaccines as needed. Immigrants must provide written documentation of their vaccination history to the civil surgeon, who then completes Form I-693. This form indicates any vaccines that were not required due to age inappropriateness.
The specific vaccines required by immigration laws include those expressly listed in the INA, such as hepatitis B and meningococcal, as well as any additional vaccines recommended by the ACIP and deemed necessary by the CDC. It is important to note that COVID-19 vaccination records were previously required for immigration medical examinations but are no longer mandatory as of January 20, 2025.
In summary, US immigration laws mandate proof of vaccination against preventable diseases, as outlined in the INA and guided by ACIP recommendations and CDC assessments. Civil surgeons facilitate the vaccination assessment process, and immigrants must provide documentation to ensure they receive the necessary vaccines for their age category.
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Frequently asked questions
There is no official vaccine mandate currently in place for the United States, according to the US Department of State. However, during the COVID-19 pandemic, COVID-19 vaccines were required for all entering non-immigration travellers until May 12, 2023.
Yes, under the Immigration and Nationality Act (INA), an individual who fails to show proof of vaccination against vaccine-preventable diseases is inadmissible. The CDC decides which vaccines are required for immigration purposes, including those listed in the INA and any other vaccinations recommended by the ACIP.
All states have rules that students must be vaccinated against specific contagious diseases to attend school. These rules are usually the same for public and private schools. By 1998-1999, all but four US states had vaccine requirements for students entering kindergarten through 12th grade. Thirty states have vaccine requirements for students going to college for the first time. Many states allow religious or philosophical exceptions from vaccine requirements.
Immunizations are often compulsory for military enlistment in the US. This has been the case throughout US history, especially during wartime, to protect American soldiers.











































