That’s the vit A study quoted.
As for Dr. Rothstein, there was not a single patient complaint against him. He was punished for using alternative therapies that actually helped his patients tremendously. You can read his own words about the matter here: https://baltimorejewishlife.com/news/news-detail.php?SECTION_ID=1&ARTICLE_ID=80202
The key here is that “each year, among reported cases, an estimated 400 to 500 people died.” Considering that most people die from complications it is very likely that many of those unreported cases died as a result of complications and were never linked back to the measles and therefore can’t be considered. At the very least one can’t make conclusions based on the assumption that the above is not true without clarifying that. Especially since the CDC reports a much higher death rate.
And as anyone can clearly see from the link below the death rate from the measles is clearly 2-3 out of 1000 even way after the vaccine was introduced (and hygiene was increasingly improved). I also think its safe to assume that the number of reported cases nowadays reflects the number of actual cases because it is much less common, and therefore to say the death rate is .5 out of 100,000 is simply a lie.