Rubella
What is Rubella?
Rubella is a contagious viral infection also known as German measles. It spreads through tiny droplets in the air when an infected person coughs or sneezes. Most cases are mild, causing a red rash and low fever that last a few days.
The virus is most dangerous for pregnant women. If a woman catches rubella during pregnancy, it can cause serious birth defects or miscarriage. This is called congenital rubella syndrome. Fortunately, the MMR vaccine has made rubella rare in the United States and many other countries.
Your immune system creates antibodies after you receive the vaccine or recover from infection. These antibodies usually provide lifelong protection. Blood tests can measure your antibody levels to confirm whether you are immune to rubella.
Symptoms
- Red or pink rash that starts on the face and spreads to the body
- Low fever, usually under 102°F
- Swollen lymph nodes, especially behind the ears and at the back of the neck
- Headache and mild body aches
- Red or inflamed eyes
- Runny or stuffy nose
- Joint pain, more common in adult women
Many people with rubella have very mild symptoms that go unnoticed. Children often feel fine even with a rash. Adults tend to experience more noticeable symptoms than children. The rash and fever typically last only two to three days.
Concerned about Rubella? Check your levels.
Screen for 1,200+ health conditions
Causes and risk factors
Rubella is caused by the rubella virus, which spreads from person to person through respiratory droplets. You can catch it by breathing in virus particles or touching a contaminated surface and then touching your face. People with rubella are most contagious when the rash appears, but they can spread the virus up to seven days before and after the rash develops.
The biggest risk factor is not being vaccinated against rubella. International travel increases your risk if you visit areas where vaccination rates are low. Pregnant women who are not immune face the greatest concern because of potential harm to the developing baby. Crowded environments like schools and daycare centers can speed up transmission when outbreaks occur.
How it's diagnosed
Doctors typically diagnose rubella based on the characteristic rash and symptoms. Blood tests can confirm the diagnosis by detecting rubella antibodies. The Rubella Ab IgG test measures your immunity level and helps determine if you have been vaccinated or previously infected.
Testing is especially important for women planning to become pregnant. Your doctor may order additional testing if an active infection is suspected. Talk to a healthcare provider about testing options if you think you have been exposed to rubella or need to verify your immune status.
Treatment options
- Rest at home to help your body fight the infection
- Drink plenty of fluids to stay hydrated
- Take acetaminophen to reduce fever and relieve aches
- Avoid contact with pregnant women until you are no longer contagious
- Get the MMR vaccine if you are not already immune
- Stay home from work or school to prevent spreading the virus
There is no specific antiviral medication for rubella. Treatment focuses on managing symptoms while your immune system clears the infection. Most people recover completely within a week. Pregnant women who are exposed to rubella need immediate medical evaluation and monitoring.
Frequently asked questions
Rubella and measles are different viruses, though both cause rashes. Rubella is usually milder with a lighter rash and lower fever. Measles causes higher fever, more severe symptoms, and a longer-lasting rash. Both are preventable with the MMR vaccine, which protects against measles, mumps, and rubella.
Most rubella symptoms last only two to three days. The rash typically appears for about three days and then fades. Swollen lymph nodes may persist for a week or more. Most people feel completely better within seven to ten days of the rash first appearing.
It is very rare but possible to get rubella after vaccination. The MMR vaccine is about 97% effective after two doses. A small percentage of vaccinated people may not develop full immunity. Breakthrough infections in vaccinated people are usually very mild with fewer symptoms.
A blood test measuring Rubella IgG antibodies can confirm your immunity. High antibody levels indicate you are protected, either from vaccination or past infection. Women planning pregnancy should verify their immunity status before conceiving. If you are not immune, the MMR vaccine can provide protection.
Rubella is usually mild in adults but can cause more joint pain than in children. The greatest danger is for pregnant women who are not immune. Adult women may experience arthritis-like joint pain lasting weeks. Complications are rare but can include bleeding problems or brain inflammation.
Rubella during pregnancy can cause congenital rubella syndrome in the baby. This may lead to heart defects, hearing loss, vision problems, or developmental delays. The risk is highest during the first trimester. Pregnant women exposed to rubella need immediate medical evaluation and close monitoring throughout pregnancy.
The MMR vaccine is the best prevention for rubella. Children typically receive two doses, one at 12 to 15 months and another at 4 to 6 years. Adults without proof of immunity should get vaccinated. Avoiding contact with infected people also helps prevent spread during outbreaks.
See a doctor if you develop a rash with fever, especially if you are pregnant or have been exposed to rubella. Contact your healthcare provider before visiting to avoid spreading the virus in the waiting room. Pregnant women need immediate evaluation if they suspect rubella exposure or infection.
No, rubella does not come back after you recover from infection. Your immune system develops lifelong antibodies that protect you. Once you have had rubella or received two doses of the MMR vaccine, you are considered immune for life. Reinfection is extremely rare.
You can spread rubella from seven days before the rash appears until seven days after. Most transmission happens around the time the rash develops. Stay home from work, school, and public places during this period. Avoid all contact with pregnant women until your doctor confirms you are no longer contagious.