Killer bees are only dangerous near the hive. They can only sting once just like a regular honey bee. The difference between the two... When you go near an africanized(killer) bee hive, they are more sensitive to intruders. They believe honey bees can sense the CO2 that we breath out. Well with the africanized bees, they get bothered more easily than regular honey bees. Then, when they are disturbed they will send out more bees to attack than regular honey bees would have.
And then... With regular honey bees, they will only chase you so far from the hive. With africanized bees they will chase you a bit further. BUT, either kind of honey bee will give up chasing after a certain distance. Their goal is to protect the hive so once they think they're safe they return to the hive.
If you ever get attacked by bees, regardless of what kind, just run... run, run, run, until they stop chasing. They do give up.
The reason some people might die is usually panic. People freak out, wave their arms in the air, etc... just run.
Oh, you can get some guineas too... they'll eat honey bees.
I hope to plant more things in my yard to attract honey bees this year... but I don't have to worry about the africanized bees yet... they've only made it to the southernmost part of Arkansas so far. Not up here yet.