- More than 603 people lost their lives, including 1,641 injured, and 600,000 affected
I feel badly for the dead, the injured, the affected, and the writer.
How many, exactly, is “more than 603”? Is this 604? When expressing numbers, you have two good choices: either give us the exact number, or use a generalizer (more than, less than, nearly, almost) in conjunction with a base number that makes sense (like 600, or 650, or even 625).
If you’re not committing to the exact number because you’re not sure — for example, maybe more people will have died after this statement is released — then specify that in some way: At least 603 people lost their lives — or At this writing, 603 have lost their lives.
Unrelated item: Be careful about “including.” Use “plus” instead, in a case like this. The way it’s currently written, this sentence says the 603+ people who died included 1,641 who were injured, and 600,000 who were affected — a physical impossibility.
Unless, of course, the 603+ people lost their lives in the process of including the injured and affected — which suggests that being inclusive can be dangerous. But then you wouldn’t need that comma. A classic case of “You can’t win for losing.”