Yes, it sounds like there are multiple disconnected infection clusters, with the assumption of a similar mode of transmission in each. (I’m obviously inferring this based on limited thin evidence.)
Consider a hypothetical autocratic regime with a history of criminalizing sexuality, committing human rights violations, and researching biological weapons. If their military felt it was time to deploy an airborne virus within enemy population centers, wouldn’t it make sense to do so simultaneously? And why wouldn’t this regime release it in a class of location that create plausible deniability, maligns a population historically persecuted by the regime, and foments societal conflict in the enemy?
Personally, given the implications, I’m hoping this warfare proves to be more informational than biological.