Legislation was implemented to prevent further spread by A. m. capensis laying
workers. Regulation R 159 of 5 February 1993 under the Agricultural Pests Act
1983, prohibits the movement of honeybees across a demarcated line. All
honeybees north of this line infested with Cape laying workers bees, had to be
destroyed. This regulation was amended on 24 December 1998 as R 1674,
and it prohibited the keeping of Cape bees north of the borderline. It also stated
that any colony that was queenless, or that had A. m. capensis laying workers,
must be killed with in 72 hours.

But all the legislation and control mechanisms failed to eradicate the problem.
One of the reasons may have been that only colonies that were moved were
inspected and killed. Colonies that were not moved during this period were
ignored but could have been infected. Another reason may have been that
some beekeepers with infected colonies did not comply with the regulation
requiring that infected colonies be killed.

The phenomenon of Apis mellifera capensis laying workers in Apis mellifera scutellata colonies in the summer rainfall region of South Africa, Thesis by Annelize Lubbe

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