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@ARTICLE{Mehl:306598,
author = {C. Mehl and O. A. Adeyemi and F. J. Möhrer and C. Wylezich
and S. Sander and K. Schmidt$^*$ and C. Geiger and N.
Schauerte and S. Wurr and K. Mätz-Rensing and A. Nesseler
and T. A. von Graffenried and A. Parker Morgan and L.
Oestereich and S. Günther and M. Beer and C. Klein and D.
Cadar and R. Kerber and D. Höper and S. Reiche and G.
Heckel and R. G. Ulrich},
title = {{P}ersistence, spillover, and evolution of co-occurring
lineages of lymphocytic choriomeningitis virus.},
journal = {Virus evolution},
volume = {11},
number = {1},
issn = {2057-1577},
address = {Oxford},
publisher = {Oxford Univ. Press},
reportid = {DKFZ-2025-02637},
pages = {veaf085},
year = {2025},
abstract = {Lymphocytic choriomeningitis virus (LCMV) is a neglected
zoonotic arenavirus primarily transmitted by house mice (Mus
musculus). In humans, LCMV infection can cause encephalitis,
meningitis, or severe birth defects. In New World (NW)
primates, LCMV causes acute and fatal callitrichid hepatitis
(CH). We detected a continuous occurrence of LCMV lineages I
and II in the house mouse population of a zoo, with the
first occurrence of lineage II in 2014 and lineage I in
2021. Although the total LCMV RNA prevalence tended to
increase between 2021 and 2023, this was primarily
associated with lineage I, while the occurrence of lineage
II tended to decrease. Despite both lineages I and II being
present in house mice in the same building where NW primates
are housed, only lineage II was detected in NW primates with
CH, and a wild wood mouse (Apodemus sylvaticus). Genomic
assignment detected exclusively M.m. domesticus ancestry in
the house mouse population of the zoo, in keeping with a
natural origin of house mice from the study region.
Therefore, the origin of lineage I is most likely explained
by the occurrence of this house mouse subspecies. The origin
and incursion mode of lineage II still remain elusive. The
detection of three or four LCMV genome segments in several
house mice was interpreted as LCMV co-infections, and the
emergence of a reassortant virus containing an S-segment of
lineage II and an L-segment of lineage I. Full genome
sequences showed limited diversity of the 2014 LCMV
sequences from NW primates, consistent with a recent
introduction of lineage II. LCMV sequences from 2021 to 2023
diverged, not only from those from 2014 but also from each
other, which suggests long-term evolution in a large host
population and/or potential repeated introductions of LCMV
lineage II. In conclusion, the presence of two LCMV lineages
within the house mouse population of the zoological garden
not only poses a potential health threat for employees and
visitors of the zoological garden, and potentially other zoo
animals, but also provides a unique opportunity to advance
our understanding of arenavirus evolution.},
keywords = {LCMV (Other) / callitrichid hepatitis (Other) /
co-infection (Other) / evolution (Other) / house mouse
(Other) / prevalence (Other) / primates (Other) /
reassortment (Other)},
cin = {W440},
ddc = {610},
cid = {I:(DE-He78)W440-20160331},
pnm = {319H - Addenda (POF4-319H)},
pid = {G:(DE-HGF)POF4-319H},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:41293484},
pmc = {pmc:PMC12642703},
doi = {10.1093/ve/veaf085},
url = {https://inrepo02.dkfz.de/record/306598},
}