D., director, South Texas Poison Control Center at The University of Texas Health Science Center. Signs that you are allergic include swelling around the mouth and trouble breathing. If this occurs, seek medical attention immediately.
Medical attention is warranted if someone is attacked by a swarm of bees.
Honey bees are not aggressive, but in South Texas there is a growing number of Africanized bees. Unless you are a bee expert, there is no sure way of determining if the bees are harmless.