Measles is dangerous in adults.
When I was seven there was measles in my classroom (there was no vaccine yet). My Dad had a public health nurse come to the house and give me a shot of gamma globulin (which at that time contained measles antibodies), and I didn't get measles.
When I was in high school, girls were the first to get the vaccine (so I didn't get it).
I caught measles from a patient when I was 28.
I had a high fever for two weeks. I had myocarditis and developed heart scarring. I turned yellow from measles hepatitis. I was out of work for three months.
The death rate in children from measles in the 1950s was around 500 per year. Not polio, not smallpox, but 500 dead kids, that was accepted as "just one of those things".
Could the gamma globulin shot with measles antibodies that you got at the age of seven, brought on your body’s violent reaction to getting measles at 28???
What’s the death rate in adults who get it?
And how would the availability of anti-virals- anti-inflammatories, and anti-biotics that I didn’t have in the 60’s when I got it affect both survival and other un fortunate endings like blindness; deafness, brain damage, etc?