What diseases are prevented by the MMR vaccine?

The MMR vaccine is specifically designed to prevent three viral infections: measles, mumps, and rubella. Each of these diseases can have significant health consequences.

Measles is a highly contagious viral illness that can lead to severe complications, including pneumonia, encephalitis, and even death. Mumps is known for causing swelling of the salivary glands and can lead to complications such as orchitis and meningitis. Rubella, also known as German measles, is particularly concerning during pregnancy as it can cause severe birth defects if a woman is infected during her first trimester.

The vaccine works by stimulating the immune system to build protection against these three viruses, thus preventing outbreaks and protecting public health. The use of the MMR vaccine in routine childhood vaccination programs has significantly decreased the incidence of these diseases in many parts of the world.

The other choices listed pertain to different vaccines and diseases not targeted by the MMR shot. For instance, the pneumonia and influenza vaccines target respiratory infections, while the vaccine for tetanus, diphtheria, and pertussis focuses on bacterial infections unrelated to the viral infections covered by the MMR. Lastly, the diseases listed in the final option, including HIV and tuberculosis, are addressed