Visual symptoms of American foulbrood
Overview of AFB symptoms
Symptoms of AFB are normally only found in worker larvae and pupae. (On rare occasions, symptoms will be found on drone brood (generally only in heavy infections). Symptoms of the disease are also ocassionally found in queen cells.)
What follows is a brief visual snapshot of each of the main symptoms of AFB. For more on each symptom, click on each heading below.
Figure 16: Coffee coloured prepupal AFB infected larva
Pupal tongue is the definitive symptom of American foulbrood.
How well do you know what you need to know about AFB and beekeeping? Take our short quiz and find out.
Our videos cover everything from your legal obligations to how to recognise AFB, collecting cell and bee samples and more.
There’s a lot of good information here, telling you everything you need to know about recognising AFB: the visual symptoms, smell of AFB and more.
New Zealand beekeepers have a number of legal obligations that must be met regarding AFB disease. Read the shortened list in summary, here.
Most hives become infected because bees, honey or equipment have been put into a hive from another hive that is infected with AFB. Lower your chances of an AFB infection by reading this section.
Find out when the next AFB Recognition and Competency Courses, or Refresher Courses are available. These are held throughout the year in various New Zealand locations across the South Island and North Island.