Rubella is highly contiguous. The disease is caused by viruses. In childhood, rubella infection usually progresses without complications. If a pregnant woman falls ill, however, the unborn child can suffer severe damage. A vaccination programme has greatly reduced the number of cases seen in Germany.
Rubella viruses can spread only by person-to-person contact and airborne transmission is the commonest route. Coughing, sneezing or talking produces tiny drops of infected saliva: these airborne pathogens can then propagate and be inhaled by others.
Pregnant women who fall ill with rubella can pass the virus on to their unborn child.
Only about half of all cases will result in visible signs of illness. The familiar skin rash starts in the face before then spreading over the entire body. The small, bright red spots then disappear again after 1 to 3 days. Lymph nodes at the nape of the neck and behind the ears may also swell up painfully. Flu-like symptoms, a high temperature and conjunctivitis may also occur. These symptoms then generally clear up completely after one week.
Cases can be more severe here and the following complications can occur:
One dangerous complication is congenital rubella syndrome (CRS). In this case, the rubella virus is transferred by the pregnant woman to her unborn child. This may cause damage to the child’s inner ear, heart, eyes and, less frequently, other organs such as the brain, liver or spleen.
The first signs of illness occur some 2 to 3 weeks after infection. Patients are infectious one week before the skin rash appears and for up to one week afterwards. Children who have contracted congenital rubella syndrome can continue to excrete large quantities of the virus via their respiratory organs and in their urine for up to a year. After going through rubella, you are protected life-long and cannot catch it again.
As rubella is highly infectious, most people without vaccination contract the disease as an infant or a child. As an adult, cases of rubella are often more serious. Rubella infections are especially dangerous for unborn children if the pregnant woman has no protective antibodies – such as are acquired by vaccination or having survived the illness.
The German Permanent Vaccination Commission (STIKO) recommends vaccination against rubella in combination with vaccination against measles and mumps as the MMR vaccination.
It is important to vaccinate both boys and girls in order to protect pregnant women, since any unvaccinated person is potentially contagious.
Avoid all contact with rubella patients if you do not have adequate immune protection.
Your local health authority can provide you with further advice. Since rubella infections must be reported, they will also have the latest information and be very experienced in dealing with the disease.
More (specialist) information is also available online from the Robert Koch Institute (www.rki.de/roeteln).
For more information about how vaccinations stop infection, visit the website set up by the Federal Centre for Health Education (www.impfen-info.de).