VPDC

Diseases

What is Rubella?Updated 5-21-26
  • Rubella, also known as German measles, is a contagious disease caused by a virus that can spread when an infected person coughs or sneezes.
  • Rubella is very dangerous for a pregnant person and their developing baby. Having rubella during pregnancy increases the risk of miscarriage, stillbirth, and preterm delivery. There is no treatment for rubella.
  • Congenital rubella syndrome (CRS) is a condition that occurs in a developing baby in the womb. Congenital rubella syndrome can affect an infant's heart, eyes, and hearing. There is no treatment for congenital rubella syndrome.
  • Rubella was eliminated from the United States in 2004. However, it can still be brought into the U.S. by unvaccinated persons who get infected while living or traveling in other countries.
  • The best way to prevent rubella is to get the measles-mumps-rubella vaccine (MMR) or the measles-mumps-rubella-varicella vaccine (MMRV). One dose of the MMR or MMRV vaccine is about 97% effective at preventing rubella.
Rubella: Symptoms and Complications
an icon of a baby with a rash

Symptoms:

  • About 25% to 50% of people who get infected with rubella will not experience any symptoms.
  • Young children who get infected with rubella typically have mild symptoms.
  • If children do have symptoms, a red rash is generally the first sign. The rash usually begins on the face then spreads to the rest of the body.
  • Most adults who get rubella usually have a mild illness, with low-grade fever, sore throat, and a rash that starts on the face and spreads to the rest of the body.
  • Some adults may also have a headache, pink eye, and general discomfort before the rash appears.
graphic of a pregnant woman with rubella

Complications:
The most serious complication from rubella infection is the harm it can cause a pregnant person’s developing baby. Serious birth defects are more common if a pregnant person is infected early in their pregnancy, especially in the first trimester. These severe birth defects are known as congenital rubella syndrome (CRS) and may result in infants being born with one or more of the following conditions:

  • Heart problems
  • Loss of hearing and eyesight
  • Intellectual disability
  • Liver or spleen damage
  • Low birth weight

In addition, up to 70% of adult women infected with rubella may experience temporary arthritis or joint pain, particularly in the fingers, wrists, and knees. This complication is uncommon in children and adult men.

If you think you or someone in your family may have symptoms or have been exposed to rubella, talk to your doctor.

How Does Rubella Spread?
image of airborne virus

Rubella spreads when an infected person coughs or sneezes. A person with rubella may spread the disease to others up to one week before the rash appears and remain contagious up to one week after.

It takes about 12 to 23 days after being around an infected person for someone to develop rubella.

If a pregnant person is infected with rubella, they can pass it on to their developing baby. See Pregnancy and Rubella to learn more.

What Should I Do if I Think I Have Rubella?

If you are confirmed to have rubella, you should stay at home away from other people until the 8th day after your rash started. This will help you make sure that you do not spread rubella to others.

If you think you or your someone in your family may have rubella because you or they have symptoms, have not been vaccinated against rubella, and/or have been traveling: 

  • Stay home and call your doctor right away and let them know your concerns.
  • Your doctor may be able to determine if you have protection against rubella based on your vaccine record or previous lab results.
  • Your doctor may also make special arrangements to evaluate you to limit risk to other patients and staff. If your doctor tells you to come in for testing, make sure to wear a facemask that covers your nose and mouth.
  • Stay away from other people and stay away from places where there are large groups of people who are at higher risk of getting sick, such as schools, daycare, and hospital or urgent care waiting rooms, before speaking to your doctor. This will help you make sure that you do not spread rubella to others.

If you think you have been exposed to someone with rubella:

  • Call your doctor right away to let them know that you may have been exposed to someone with rubella.
  • Your doctor may be able to determine if you have protection against rubella based on your vaccine record or previous lab results.
  • Your doctor may also make special arrangements to evaluate you to limit risk to other patients and staff. If your doctor tells you to come in for testing, make sure to wear a facemask that covers your nose and mouth.
  • Do not leave your home until your doctor says it is okay. Stay away from places where there are large groups of people who are at higher risk of getting sick, such as schools, daycare, and hospital or urgent care waiting rooms. This will help you make sure that you do not spread rubella to others.
Information for the Public
Vaccine Information
MMR Vaccine

The best way to prevent rubella is to get the rubella vaccine. The rubella vaccine is safe and works very well in preventing rubella. One dose of the MMR or MMRV vaccine is about 97% effective at preventing rubella.

Everyone including children, teenagers, and adults should get two doses of rubella vaccine if they have never had rubella and were never vaccinated.

There are two types of rubella vaccines:

  • Measles-mumps-rubella vaccine (MMR) for people who are 12 months old and older.
  • Measles-mumps-rubella-varicella vaccine (MMRV) for people who are 12 months to 12 years old.
Vaccine Recommendations
a child getting vaccinated

Rubella can be prevented with MMR or MMRV vaccines. California requires children enrolling in school or childcare receive at least one dose of the MMR or MMRV vaccine.

The American Academy of Pediatrics (AAP) recommends that children receive two doses of MMR or MMRV:

  • Dose 1 at 12-15 months old, and Dose 2 at 4-6 years old (before starting kindergarten).
    • Children can get the second dose earlier as long as it is at least 28 days after the first dose.

Other vaccines can be given at the same time as the MMR or MMRV vaccine.

Who SHOULD get the vaccine:

  • Anyone born in 1957 or later who has never had rubella or has never been vaccinated against rubella should get two doses of MMR vaccine.
    • Children 12 months through 12 years old can get either MMR or MMRV vaccine.
  • Any adults who do not have immunity to rubella, especially adults at higher risk – for example, students in post-high school education institutions, healthcare personnel, and international travelers.

Who should NOT get the vaccine:

  • Anyone with a severe, life-threatening allergy or who has had an allergic reaction to any part of the MMR or MMRV vaccine
  • Anyone with a severely weakened immune system, or who has a family history of conditions that severely weaken the immune system, unless you’ve been cleared by your doctor
  • Anyone who is pregnant or thinks they might be pregnant

Who should talk to their doctor in case they need to wait to get the vaccine:

  • Anyone who got an antibody-containing blood product (like immune globulin/IG) less than a year ago

Talk to your doctor if you have any of these health conditions or other precautions for vaccination.

Learn more about who should get the MMR or MMRV vaccine.

Where to Get the Vaccine

If you have insurance:

  • Talk to your doctor or check with your local pharmacy to see what vaccines they offer.
  • Most health insurance plans cover the cost of recommended vaccines for children and adults.

If you are uninsured or underinsured:

  • Programs are available to help cover the cost of vaccines.
  • Children 18 years or younger may receive vaccines at no cost through the Vaccines for Children (VFC) Program if they are:
    • Eligible for or are enrolled in Medi-Cal
    • American Indian or Alaskan Native
    • Uninsured (do not have health insurance)
    • Underinsured (private health insurance does not cover the full cost of vaccines)
  • Adults who are uninsured or underinsured may be able to get free or low-cost vaccines at clinics enrolled in the Vaccines for Adults (VFA) program. For more information on who is eligible, read VFA Eligibility Based on Insurance Status.

Locating Vaccine Clinics:

  • A list of free and low-cost clinics in Los Angeles County.
  • Interactive county map to locate free and low-cost vaccine clinics.
  • Call 1-833-540-0473 (Public Health InfoLine) for a list of free or low-cost vaccine clinics. This includes Vaccines for Children (VFC) provider locations that serve Medi-Cal eligible children and uninsured or underinsured adults.
Keeping Track of Your Immunization Records
graphic of a clipboard

If you are unsure of your rubella vaccination status, you can request a copy of your records.

To request your record:

If your vaccines are not listed, ask your doctor, pharmacist, or vaccine provider for a copy of your vaccine records. You can also ask them to add your vaccines to the California Immunization Registry (CAIR).

Other tips to find your records:

Additional Resources
Information for Providers
Rubella Clinical Presentation

Consider rubella in unvaccinated patients who recently traveled internationally or a person who was exposed to a confirmed rubella case. Rubella presents nonspecifically with the following symptoms:

  • Maculopapular rash (fainter than a measles rash) that starts on the face and progresses from head to feet, becomes generalized in 24 hours and lasts a median of 3 days.
  • Other symptoms such as a low-grade fever, headache, conjunctivitis, rhinitis, and lymphadenopathy may occur 1-5 days before the rash.
Congenital Rubella Syndrome Clinical Presentation

Rubella is a mild viral illness, but it's very infectious and can lead to Congenital Rubella Syndrome (CRS), which can cause structural birth defects affecting the eyes and heart. When rubella infection occurs during pregnancy, especially during the first trimester, complications include miscarriages, and fetal deaths/stillbirths. At birth, infants may have signs and symptoms of CRS, including:

  • Hearing impairment
  • Eye anomalies including cataracts, congenital glaucoma or pigmentary retinopathy
  • Congenital heart disease (most commonly, patent ductus arteriosus or peripheral pulmonary artery stenosis)
  • Cognitive disabilities and developmental delays
  • Fetal growth restrictions
  • Liver and spleen damage including hepatitis and hepatosplenomegaly
  • Bone abnormalities

CRS was eliminated from the United States in 2004, but cases can still be imported by a pregnant person who contracts rubella in an endemic country. Although rare, CRS can occur when a susceptible pregnant person acquires a mild or asymptomatic rubella infection early in pregnancy, and fetal anomalies are later noted on ultrasound or at birth. Maternal infection beyond 18 weeks gestation may result in congenital rubella infection (CRI) only and not signs and symptoms of CRS.

Universal childhood vaccine is important to eliminate community transmission of rubella and thus prevent acquisition during early pregnancy.

Disease Reporting

Please contact the LAC DPH Vaccine-Preventable Disease Control Program to report a case or obtain technical assistance with specimen collection or completion of forms for rubella or congenital rubella syndrome (CRS), or for any other vaccine-preventable disease. Consultation with VPDC is required before sending specimens to the Public Health Laboratory.

Suspected or confirmed rubella and CRS cases are to be reported within 7 calendar days of identification by electronic transmission (email or digital fax) or telephone per Title 17, California Code of Regulations (CCR), Section 2500.

  • Weekday Telephone: 8:30 am to 5:00 pm: Call 213-351-7800
  • After Hours: Call 213-974-1234, option 8
  • Email: vpdc@ph.lacounty.gov
  • Fax Number: 213-351-2782

Please send the patient’s medical records and any available immunization records and/or laboratory results via secure email or fax. For Congenital Rubella Syndrome, please also send any available information on the patient’s birth parent’s medical history, including vaccination records, travel history, and prenatal screening.

Diagnostic Testing for Rubella and CRS

Clinical diagnosis of CRS and acute cases of rubella should be verified with laboratory testing. Consultation with VPDC is required before sending specimens to the Public Health Laboratory. Follow the Checklist for Managing Patients Suspected of Having Rubella for specific instructions.

Confirmatory Laboratory Tests for Acute Rubella

  • Rubella RT-PCR of nasopharyngeal (NP) or throat swabs, urine specimens, and/or cerebrospinal fluid (CSF) is confirmatory for acute rubella.
    • NP swabs are the preferred sample type for detecting rubella RNA in suspected acute infections. Throat swabs are acceptable alternatives if NP swabs are not feasible.
    • Use viral transport media to collect NP and throat swabs.
  • Rubella IgM - A positive IgM result is only considered confirmatory for acute rubella if paired with a low IgG avidity result.
    • Otherwise, a positive IgM is only considered presumptive laboratory evidence of rubella and would need to be accompanied by known exposure to a laboratory-confirmed rubella case or a past history of a negative IgG result.
  • Rubella IgG - Paired acute and convalescent rubella IgG results showing a significant rise (defined as seroconversion or at least a 4-fold rise in titer) is considered confirmatory for acute rubella.

Confirmatory Laboratory Tests for Congenital Rubella Syndrome

  • Rubella RT-PCR of nasopharyngeal (NP) or throat swabs, urine specimens, and/or cerebrospinal fluid (CSF) is confirmatory for CRS in infants.
    • NP swabs are the preferred sample type for detecting rubella RNA in suspected CRS cases. Throat swabs are acceptable alternatives if NP swabs are not feasible. Collect specimens as close to birth as possible in infants with suspected CRS to maximize the likelihood of detecting rubella virus RNA.
    • Use viral transport media to collect NP and throat swabs.
  • Rubella IgM - Test suspected infants as close to birth as possible and again at 1 month of age if the initial IgM test is negative. The presence of rubella IgM in an infant is confirmatory for CRS.
  • Rubella IgG - The presence of rubella IgG in an infant that does not drop at the expected rate of a twofold dilution per month is confirmatory for CRS.

If a commercial lab cannot perform testing, please call the Los Angeles County Department of Public Health Vaccine-Preventable Disease Control (VPDC) Program at 213-351-7800 to arrange testing through the Public Health Laboratory (PHL).

  • Specimen Storage: Store specimens refrigerated at 2-8°C until transportation to PHL or commercial lab can be arranged. Transport refrigerated specimens on cold packs to the laboratory as soon as possible.
Rubella Immunity Testing for Pregnant Persons

Rubella IgG serology testing should be used to assess immunity to rubella before, during, and after pregnancy.

Rubella IgM testing is used to confirm suspected cases of acute rubella infection and CRS.

  • Routine IgM screening of pregnant persons is not recommended.
  • IgM testing should be limited to individuals with suspected rubella infectionand should not be used to screen persons who are asymptomatic.

Additional details regarding rubella infection in pregnancy can be found here.

Vaccine Recommendations

The California Department of Public Health recommends that persons who do not have evidence of immunity should get vaccinated. Vaccination is the best way to prevent rubella and CRS and their complications.

  • MMR and MMRV vaccines are both safe and highly effective vaccines to protect against rubella.
  • In immunocompetent individuals, 1 dose of a rubella-containing vaccine is 97% effective against rubella, with a range of 94-100%.
  • Non-immune healthcare personnel should receive 2 doses of MMR vaccine, separated by at least 28 days.

MMR and MMRV Vaccine Recommendations for Children and Adults

Rubella-Containing Vaccines and Brands Number of Doses Age for Primary Series Recommended Age Dose & Route
Dose 1 Dose 2
M-M-R®II | PRIORIX®
(Measles-Mumps-Rubella)*
Merck | GlaxoSmithKline (GSK)
2** 12-15 mos
4-6 yrs and/or at least 4 wks after Dose 1 ≥12 mos** 0.5 mL Subcutaneous (SQ) or Intramuscular (IM)***, †
≥19 yrs At least 4 wks after Dose 1
ProQuad®
(Measles-Mumps-Rubella-Varicella)‡
Merck
2 12-47 mos 4-6 yrs and/or at least 3 mos after Dose 1 12 mos-12 yrs 0.5 mL IM or SQ†
*M-M-R®II and PRIORIX® are fully interchangeable for all indications for which MMR vaccination is recommended.
**An additional dose may be indicated in rubella outbreak situations and travel where rubella exposure is likely. Doses given before 12 months are invalid. May receive 1st dose of MMR 4 days before 1st birthday.
***PRIORIX® should only be given subcutaneously.
†The preferred injection site in small children is the anterolateral aspect of the thigh. The posterior triceps aspect of the upper arm is the preferred site for older children, adolescents, and adults.
‡ProQuad® is only licensed for use in children 12 months through 12 years of age. It may be given at the same time as other vaccines. ProQuad® is associated with a higher risk for fever and febrile seizures in children 12-23 months of age.

MMR Vaccine Recommendations for Adults
In general, adults without presumptive evidence of immunity should receive at least 1 dose of the MMR vaccine, and certain adults may need 2 doses depending on their risk factors.

  • Adults who are going to be in a setting that poses a high risk for rubella transmission should make sure they have had two doses separated by at least 28 days.
  • The preferred injection site for adults is the posterior triceps aspect of the upper arm.

Pregnancy is a contraindication to vaccination with live virus vaccines, including MMR and MMRV. The American College of Obstetricians & Gynecologists (ACOG) recommends avoiding pregnancy for 4 weeks after receipt of MMR.

Vaccine Reporting, Storage and Handling

Administration Data: California healthcare providers are required to report data on all valid immunizations that they administer to their patients into the California Immunization Registry (CAIR) within 2 weeks of administration per AB 1797.

Administration Errors: Healthcare providers are strongly recommended to report all vaccine administration errors to the Institute for Safe Medication Practices.

Adverse Events: Healthcare providers are required to report any adverse event on the reportable events list to the Vaccine Adverse Event Reporting System (VAERS) per HR 5546.

Storage and Handling: For general recommendations and guidance access the Vaccine Storage and Handling Job Aids.

Additional Resources


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