Re 5

Not sure what you are trying to say.

But the measles vaccine is also available for adults.

MMR vaccine for Adults:
The MMR vaccine, which protects against measles, mumps, and rubella, is recommended for adults who:
Were born after 1957.
Have never had measles or been vaccinated.
Don't have proof of vaccination or immunity.

Certain groups of adults should receive two doses of the MMR vaccine, separated by at least 28 days, including:
Students at post-secondary institutions.
Health-care workers.
International travelers.
Women of childbearing age before they become pregnant.
Anyone in an area where an outbreak is occurring.
People who were immunized between 1963 and 1967 with an inactivated measles vaccine.

And now you know the rest of the story.