I think that the Mers virus may be a water born entity, although I can't explain why I came to think that. However the fact that it is more active in warm weather than cold weather, leads me to think that it's not air borne, it's also less contagious, for now! Like the common cold looking for a host in the winter, this entity needs one in the summer. As the temperature rises and humidity reduces, the entity is forced to find somewhere wet to survive, thus it infects camels / humans. I suspect that it may be dormant in wells and other water sources in desert area's, however when removed from these water sources by drinking / consumption, it can then find it's self in unsuitable environments. Thus it is mutating and looking for water sources to survive, once it infects a human host and starts doing damage, we are then fighting it with antibiotics and other techniques. I believe this entity is mutogenic and poses a threat!
Singapore arrests man who tried to join ISIS (Reuters)
from the article: Saudi Arabia reports 10 more cases in MERS outbreak