From Texas Standard:
A Midland man was stung over 50 times and his dogs died after being stung over 1,000 times. In Texarkana, a swarm of bees surrounded a woman's car, trapping her inside. A man mowing his lawn in Raymondville was swarmed, suffered more than 200 stings, and died. A farmer in Lozano died after being stung more than 3,000 times.
These are no ordinary bees. Entomologists call them killer bees, or Africanized bees – a hybrid of two species, the African honey bee and various European cousins. They look like European honey bees, stripes and all, but are smaller. And their impulse to sting is 10 times greater – bees will pursue victims as far as half of a mile away from hives.