The 50-Year Hive Killer: What You Need to Know About American Foulbrood
The 50-Year Hive Killer: What You Need to Know About American Foulbrood 1. Introduction: The Beekeeper’s Shadow In apiary pathology, few pathogens command as much respect and dread as Paenibacillus larvae , the causative agent of American Foulbrood (AFB). While many hive stressors are transient or manageable through seasonal husbandry, AFB is a catastrophic bacterial infection that targets the colony’s future: the larvae. The window of vulnerability is narrow but critical; larvae are most susceptible during their first 24 to 48 hours of life, a period when their internal immune defenses are at their lowest. Once established, this pathogen does not merely kill a generation of bees—it leaves behind a legacy of contamination that can haunt an apiary for decades. 2. The Fifty-Year Ghost: Why This Bacteria is Different The resilience of American Foulbrood lies in its ability to transform from an active vegetative state into highly resistant spores. These spores act as armored s...