Stinging occurs after a human or animal has intruded the territory of the honey bee colony. In some cases, vibrations from machinery have provoked stinging incidents. Chance encounters with individual AHB's on blossoms pose no greater threat than an encounter with European honey bees. Even though mass stinging is terrifying and could be life threatening, it is rare. Also, the venom from one AHB sting is no more potent than the venom of a single EHB sting.
Common sense is the best defense for avoiding stings from all stinging insects -not just honey bees.
If you are being stung or you are in the vicinity of large numbers of insects you think might sting, calmly but quickly move away from the area. However, the difference is not obvious. For identification, special techniques must be used. Beekeepers in areas recently Africanized commonly complain that honey yields have dropped precipitously. However, after developing different management schemes over several years, honey yields in Africanized areas have recovered somewhat.