NEVER BRING BABIES AROUND RACE NOISE AND MAKE SURE YOUNG CHILDREN HAVE PROPER EAR PROTECTION.
YOU ARE RESPONSIBLE FOR YOUR CHILDREN'S HEARING.....NOT THEM !

Loud Noise Permanently Kills Ear Nerve Endings. Three small bones in the middle ear help transfer sound vibrations to the
 inner ear where they become nerve impulses that the brain interprets as sound. "When noise is too loud, it begins to kill
 the hair cells and nerve endings in the inner ear. "The louder a noise, the longer the exposure, and the closer you are
 to the noise source, the more damaging it is to your nerve endings, or your hearing." As the number of nerve endings
 decreases due to damage, so does hearing. Nerve endings cannot be healed or regenerated and the damage is permanent.
 

 https://www.cdc.gov/measles/vaccination.html

Before the measles vaccination program started in 1963, an estimated 3 to 4 million people got measles each year in the
United States. Of these, approximately 500,000 cases were reported each year to CDC; of these, 400 to 500 died, 48,000
were hospitalized, and 1,000 developed encephalitis (brain swelling) from measles. Since then, widespread use of measles
vaccine has led to a greater than 99% reduction in measles cases compared with the pre-vaccine era. However, measles is
still common in other countries. Unvaccinated people continue to get measles while abroad and bring the disease into the
United States  and spread it to others.