Yan Ping Chen

During early-2025 US honey bee collapses (>60% losses), dying bees carried high loads of infectious DWV-A, DWV-B, and ABPV, and 100% of screened Varroa mites carried the amitraz-resistance allele.

The paper genetically classifies 525 Picornavirales genomes and 'picorna-like' viruses using multiple sequence and structural analyses, revealing support for existing families and six novel families, along with 32 new genera.

Industry surveys covering over half of U.S. managed colonies found widespread 2024-2025 honey bee losses, worst in commercial operations, and no excess loss with amitraz use.

This study examines how nutrition, age, and behavioral caste affect honey bee physiology and immunity, finding that pollen restriction leads to precocious foraging and increased viral susceptibility.