The problem isn't that the virus became more deadly.
The problem is that the virus came back. The heat and dry weather of summer will not guarantee that the disease dies out, especially since the disease has struck the Middle East, famously arid and hot, and has not stopped.
The problem is that the virus came back. The heat and dry weather of summer will not guarantee that the disease dies out, especially since the disease has struck the Middle East, famously arid and hot, and has not stopped.