“Globally, the WHO states there were 173,000 cases of measles in 2017. The article makes no mention of how many of those 173,000 cases were people already vaccinated, but the WHO does claim that the global vaccine coverage for measles is at 85%. Taking that percentage and applying it to the 173,000 reported cases, that would mean app. 147,000 of the people in question would have been vaccinated.”
Your assumption that the 85% figure applies to the 173,000 cases is completely unwarranted unless you have information that does not appear in the article.
What % of the 173,000 cases would you think were vaccinated?
Concur - the likelihood is that a high percentage of those with the disease were not vaccinated while a small percentage vaccinated may have contracted the disease. There is always the possibility of an ineffective inoculation.