What Is The MMR Vaccine And The MMR Side Effects

mmr side effectsWhat Is The MMR Vaccine

The MMR vaccine is a fortification and immunization shot against three common viral diseases: epidemic parotiditis (mumps), measles, and German measles or rubella. The vaccine is actually a mixture of the three viruses which were prealably weakened.

The MMR shot is administered in two doses. The first dose must be administered when the child is around one year of age. The second dose that’s meant to seal the immunization process is usually administered at age 4-5. Most people though develop immunity to these three viruses after the first shot. However, about 2-4% don’t and that’s why the second MMR vaccination is required.

If the immunization process for these three viruses is made in three doses, one for each virus, the MMR side effects may still occur, and the risk for the child to actually become infected with one of the viruses for which they haven’t been immunized are increased.

There is also a version of the MMR vaccine, the MMRV vaccine, which adds an attenuated version of the varicella virus to the vaccine. However, the U.S. health officials still sustain the MMR version due to the increased risk of adverse effects of MMRV. Fever-induced seizure was registered in 9 MMRV innoculated subjects out of 10,000, as opposed to only 4 subjects innoculated with MMR per 10,000.

Although the MMR is a vaccine “for the children”, it’s also recommended for patients infected with HIV.

Of course, like most vaccines, the MMR has its share of side effects.

Which Are The Most Common MMR Side Effects

Although there are quite a few possible MMR side effects, these don’t usually have severe consequences on the subjects’ health. In general, about 10% of the children innoculated with the MMR vaccine develop malaise, fever and a skin rash, which sometimes may have a purple color, looking very scary for some parents. The rash is a reaction to the rubella virus in the vaccine. These symptoms usually occur about two weeks, or even five days after the innoculation with the vaccine.

Of course, since this vaccine contains attenuated mumps, rubella and measles viruses, any subject may develop a weak form of each one of the diseases. For mumps, symptoms may include the mild swelling of the parotide glands, which lasts up to 3-4 days.

Up to 5% of the children may experience joint pains as MMR side effects. These symptoms are however temporary.

Some of the more severe MMR side effects are acute arthritis and very rarely chronic arthritis. However, these side effects have shown only on older subjects innoculated with the vaccined.

Any subject may develop allergic reactions to the MMR vaccine. Although cases of allergic reactions to this vaccine are rare, they are usually violent and accompaied by anaphylaxis. Some of the subjects may develop an allergic reaction to the vaccine due to the fact that some of the attenuated viruses in the vaccine were grown in chick embryo fibroplasts, and due to this fact, they contain small amounts of egg protein. So, technically if the subject is allergic to eggs, they may develop an allergic reaction to the virus.

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