There is no single federal law requiring all nurses to be vaccinated, but in practice, most nurses must meet several vaccination requirements to work. These requirements come from a patchwork of federal regulations, state laws, OSHA standards, and individual employer policies. The specific vaccines you need depend on where you work, what state you’re in, and whether your facility accepts Medicare or Medicaid.
Vaccines Most Nurses Need for Employment
The CDC recommends a core set of vaccines for all healthcare workers, and most hospitals and clinical facilities treat these recommendations as requirements. The standard list includes hepatitis B, measles/mumps/rubella (MMR), varicella (chickenpox), tetanus/diphtheria/pertussis (Tdap), and seasonal influenza. These aren’t optional suggestions at most workplaces. Hospitals and health systems typically require proof of immunity before your first day of patient care.
Hepatitis B holds a unique legal position. OSHA’s Bloodborne Pathogens standard requires employers to offer the hepatitis B vaccine series, at no cost, to every worker with occupational exposure to blood or bodily fluids. You can decline, but you must sign a formal declination form acknowledging you remain at risk. If you change your mind later, your employer must still provide the vaccine free of charge as long as you’re still in an exposed role.
Influenza vaccination is required at the vast majority of U.S. hospitals. A 2021 survey published in JAMA Network Open found that 74% of nonfederal hospitals mandated the flu vaccine for staff, up slightly from 69% in 2017. Among VA hospitals, the rate jumped dramatically from 4% in 2017 to 96% in 2021. Most of these mandates include an opt-out exemption rather than a hard requirement with no exceptions.
COVID-19 Vaccination for Healthcare Staff
The Centers for Medicare and Medicaid Services (CMS) issued a rule requiring COVID-19 vaccination for staff at facilities that participate in Medicare or Medicaid. This covers a wide range of settings: hospitals, long-term care facilities, home health agencies, hospices, ambulatory surgery centers, dialysis centers, psychiatric residential treatment facilities, rural health clinics, and more. If your employer bills Medicare or Medicaid, the rule applies to you.
Under this rule, facilities must have policies in place to ensure staff are fully vaccinated, track vaccination status, and provide accommodations for those with approved exemptions. Enforcement happens through onsite surveys. Facilities found out of compliance receive citations and must correct the deficiency. If they don’t, they risk losing Medicare or Medicaid funding, which for most healthcare organizations is an existential threat. That makes compliance near-universal at covered facilities.
State Laws Add Another Layer
Several states have their own statutes requiring specific vaccines for healthcare workers, and these vary considerably. Maine requires all employees at designated healthcare facilities to show proof of immunization or documented immunity against measles, mumps, rubella, varicella, and hepatitis B. New York requires hospital personnel to hold certificates of immunization against rubella and measles as a condition of employment. Rhode Island mandates that healthcare workers provide evidence of immunity to measles, mumps, rubella, and varicella before starting work. California’s regulations include seasonal influenza, MMR, varicella, and Tdap on the list.
Some states go further than others, and the specific diseases covered, exemption processes, and enforcement mechanisms differ from state to state. If you’re starting a nursing job in a new state, check that state’s health department requirements in addition to whatever your employer asks for.
How You Prove Immunity
Simply saying you’ve been vaccinated isn’t enough. Healthcare employers require specific documentation, and the accepted forms of proof vary by disease. For measles, you need written documentation of two MMR doses given at least 28 days apart, lab evidence of immunity (a blood test called a titer), lab confirmation of past disease, or proof you were born before 1957. Mumps and rubella follow similar patterns.
For varicella, acceptable proof includes documentation of two vaccine doses, a positive titer, lab-confirmed past infection, or a healthcare provider’s verification that you previously had chickenpox or shingles. For hepatitis B, nurses in high-risk roles undergo post-vaccination blood testing one to two months after completing the vaccine series. A protective antibody level of 10 mIU/mL or higher confirms immunity.
Your employer’s occupational health department will maintain records reflecting your immunity status for each required disease, including vaccination history, titer results, any vaccines given during employment, and any adverse reactions you’ve experienced.
Religious and Medical Exemptions
Federal law provides two pathways for exemptions. Under the Americans with Disabilities Act, employees with a medical condition that prevents vaccination can request a reasonable accommodation. Under Title VII of the Civil Rights Act, employees with sincerely held religious beliefs that conflict with vaccination can also request an exemption.
These protections have limits. The EEOC has clarified that Title VII covers religious beliefs, practices, and observances, but does not protect social, political, or economic views or personal preferences. Employers can deny a religious accommodation request if granting it would create an undue hardship. In practice, approved exemptions typically result in alternative measures like wearing a mask during flu season or undergoing regular testing rather than a blanket pass from all requirements.
Requirements for Nursing Students
If you’re still in school, vaccination requirements often kick in before you even start working. Nursing programs require students to meet immunization standards before entering clinical rotations at hospitals and other facilities. The clinical site, not just the school, sets these rules. A hospital hosting nursing students can mandate any vaccine it requires of its own employees, and students who can’t meet those requirements may be unable to complete the clinical hours needed to graduate.
This means vaccination compliance is effectively a prerequisite for entering the profession, not just for maintaining employment in it. Most programs spell out exact requirements during the admissions process, giving students time to complete any missing vaccine series or obtain titers before rotations begin.