Cold case : the disappearance of Egypt bee virus, a fourth distinct master strain of deformed wing virus linked to honeybee mortality in 1970's Egypt

Joachim R. de Miranda, Laura E. Brettell, Nor Chejanovsky, Anna K. Childers, Anne Dalmon, Ward Deboutte, Dirk C. de Graaf, Vincent Doublet, Haftom Gebremedhn, Elke Genersch, Sebastian Gisder, Fredrik Granberg, Nizar J. Haddad, Rene Kaden, Robyn Manley, Jelle Matthijnssens, Ivan Meeus, Hussein Migdadi, Meghan O. Milbrath, Fanny MondetEmily J. Remnant, John M. K. Roberts, Eugene V. Ryabov, Noa Sela, Guy Smagghe, Hema Somanathan, Lena Wilfert, Owen N. Wright, Stephen J. Martin, Brenda V. Ball

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

In 1977, a sample of diseased adult honeybees (Apis mellifera) from Egypt was found to contain large amounts of a previously unknown virus, Egypt bee virus, which was subsequently shown to be serologically related to deformed wing virus (DWV). By sequencing the original isolate, we demonstrate that Egypt bee virus is in fact a fourth unique, major variant of DWV (DWV-D): more closely related to DWV-C than to either DWV-A or DWV-B. DWV-A and DWV-B are the most common DWV variants worldwide due to their close relationship and transmission by Varroa destructor. However, we could not find any trace of DWV-D in several hundred RNA sequencing libraries from a worldwide selection of honeybee, varroa and bumblebee samples. This means that DWV-D has either become extinct, been replaced by other DWV variants better adapted to varroa-mediated transmission, or persists only in a narrow geographic or host range, isolated from common bee and beekeeping trade routes.
Original languageEnglish
Article number12
Number of pages11
JournalVirology Journal
Volume19
Issue number1
DOIs
Publication statusPublished - 2022

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