Stan Sandler mentioned that packages of bee with young vigorous queens
were subject to EFB and colony loss in PEI.

Then states that "Re-queening, like antibiotics, is most effective
before the disease gets going."

A little clarification would help me on those points as they appear to
clash - at least in the manner put in the mail.

By what action Is the changing of the Queen thought to alleviate EFB  in
the colony?

1.Only the presence of a new queen sorting out the problem?
2. A new Queen invigorating a colony with more brood and subsequent
bees, which can then overcome the rate of infection?
3. A new Queen delivering a new packet of genes - more resistant to M.
pluton?

Also, what are the thoughts on coexistence of EFB and Chalkbrood? - is
the latter not thought to inhibit the presence of the former as
suggested on page 22 of USDA Diagnosis of Honey Bee Diseases (Hand book
690) - revised July 2000.

Comments to educate please!

As ever

Peter
Indre
West Central France