Anyway it seems " SARS, which was estimated to be more infectious than MERS-CoV, caused a classic epidemic of over 8000 cases globally and was eliminated from the human population within 8 months. MERS-CoV on the other hand, estimated to be less infectious, has persisted for more than 3 times the duration of SARS. Further, SARS causes satellite epidemics in countries to which it spread, whereas MERS-CoV has remained mainly in the Middle East, without sparking epidemics in other countries where cases have occurred." so...it was naturraly eliminated by humans...(bioterrorism folder)

source:

https://sphcm.med.unsw.edu.au/news/could-mers-coronavirus-be-bioterrorism-new-study-shows-why-could-be-one-explanations-paradoxes