This short article, by David Heaf was published in July this year.
It uses language which may be unfamiliar to some readers, for example…
Microbiome: this is the community of microorganisms (such as bacteria, fungi, and viruses) that inhabit a particular environment. So the bees’ microbiome is within the hive and their gut microbiome is within their gut.
Pyrethroids: insecticides are a chemical class of active ingredients found in many of the modern insecticides