scholarly journals An outbreak of listeriosis linked to turkey meat products in the Czech Republic, 2012–2016

2018 ◽  
Vol 146 (11) ◽  
pp. 1407-1412 ◽  
Author(s):  
T. Gelbíčová ◽  
M. Zobaníková ◽  
Z. Tomáštíková ◽  
I. Van Walle ◽  
W. Ruppitsch ◽  
...  
Keyword(s):  
Czech Republic ◽  
Food Processing ◽  
Meat Products ◽  
Processing Plant ◽  
Outbreak Strain ◽  
The Czech Republic ◽  
Turkey Meat ◽  
Close Relationship ◽  
Serotype 1 ◽  
Food Processing Plant

AbstractSince 2012–2016 an increased number of listeriosis cases, especially from one region of the Czech Republic, were observed. Most of them were caused by strains of serotype 1/2a, clonal complex 8, indistinguishable by pulsed-field gel electrophoresis. Twenty-six human cases were reported, including two neonatal cases in twins. Three cases were fatal. The typing of Listeria monocytogenes isolates from food enabled to confirm a turkey meat delicatessen as the vehicle of infection for this local outbreak in the Moravian-Silesian Region. The food strains belonging to identical pulsotype were isolated from ready-to-eat turkey meat products packaged by the same producer between 2012 and 2016. This fact confirms that the described L. monocytogenes outbreak strain probably persisted in the environment of the aforementioned food-processing plant over several years. Whole-genome sequencing confirmed a very close relationship (zero to seven different alleles) between isolates from humans, foods and swabs from the environment of the food-processing plant under investigation.

scholarly journals Multilocus Sequence Typing of Listeria monocytogenes by Use of Hypervariable Genes Reveals Clonal and Recombination Histories of Three Lineages

2004 ◽  
Vol 70 (4) ◽  
pp. 2193-2203 ◽  
Author(s):  
Richard J. Meinersmann ◽  
Robert W. Phillips ◽  
Martin Wiedmann ◽  
Mark E. Berrang
Keyword(s):  
Listeria Monocytogenes ◽  
Gene Transfer ◽  
Horizontal Gene Transfer ◽  
Food Processing ◽  
Genomic Sequence ◽  
Processing Plant ◽  
Serotype 1 ◽  
History Of ◽  
Serotype 4B ◽  
Food Processing Plant

ABSTRACT In an attempt to develop a method to discriminate among isolates of Listeria monocytogenes, the sequences of all of the annotated genes from the fully sequenced strain L. monocytogenes EGD-e (serotype 1/2a) were compared by BLASTn to a file of the unfinished genomic sequence of L. monocytogenes ATCC 19115 (serotype 4b). Approximately 7% of the matching genes demonstrated 90% or lower identity between the two strains, and the lowest observed identity was 80%. Nine genes (hisJ, cbiE, truB, ribC, comEA, purM, aroE, hisC, and addB) in the 80 to 90% identity group and two genes (gyrB and rnhB) with approximately 97% identity were selected for multilocus sequence analysis in two sets of L. monocytogenes isolates (a 15-strain diversity set and a set of 19 isolates from a single food-processing plant). Based on concatenated sequences, a total of 33 allotypes were differentiated among the 34 isolates tested. Population genetics analyses revealed three lineages of L. monocytogenes that differed in their history of apparent recombination. Lineage I appeared to be completely clonal, whereas representatives of the other lineages demonstrated evidence of horizontal gene transfer and recombination. Although most of the gene sequences for lineage II strains were distinct from those of lineage I, a few strains with the majority of genes characteristic of lineage II had some that were characteristic of lineage I. Genes from lineage III organisms were mostly similar to lineage I genes, with instances of genes appearing to be mosaics with lineage II genes. Even though lineage I and lineage II generally demonstrated very distinct sequences, the sequences for the 11 selected genes demonstrated little discriminatory power within each lineage. In the L. monocytogenes isolate set obtained from one food-processing plant, lineage I and lineage II were found to be almost equally prevalent. While it appears that different lineages of L. monocytogenes can share habitats, they appear to differ in their histories of horizontal gene transfer.

Teams, Incentive Pay, and Productive Efficiency: Evidence from a Food-Processing Plant

ILR Review ◽  
2010 ◽  
Vol 63 (4) ◽  
pp. 606-626 ◽  
Author(s):  
Derek C. Jones ◽  
Panu Kalmi ◽  
Antti Kauhanen
Keyword(s):  
Food Processing ◽  
Productive Efficiency ◽  
Incentive Pay ◽  
Processing Plant ◽  
Food Processing Plant

Outbreak ofNeisseria meningitidisC in workers at a large food-processing plant in Brazil: challenges of controlling disease spread to the larger community

2011 ◽  
Vol 140 (5) ◽  
pp. 906-915 ◽  
Author(s):  
B. P. M. ISER ◽  
H. C. A. V. LIMA ◽  
C. De MORAES ◽  
R. P. A. De ALMEIDA ◽  
L. T. WATANABE ◽  
...  
Keyword(s):  
Food Processing ◽  
Purpura Fulminans ◽  
Control Measures ◽  
Disease Spread ◽  
Processing Plant ◽  
Sterile Site ◽  
Matched Case ◽  
Epidemiological Link ◽  
Control Study ◽  
Food Processing Plant

SUMMARYAn outbreak of meningococcal disease (MD) with severe morbidity and mortality was investigated in midwestern Brazil in order to identify control measures. A MD case was defined as isolation ofNeisseria meningitidis, or detection of polysaccharide antigen in a sterile site, or presence of clinical purpura fulminans, or an epidemiological link with a laboratory-confirmed case-patient, between June and August 2008. In 8 out of 16 MD cases studied, serogroup C ST103 complex was identified. Five (31%) cases had neurological findings and five (31%) died. The attack rate was 12 cases/100 000 town residents and 60 cases/100 000 employees in a large local food-processing plant. We conducted a matched case-control study of eight primary laboratory-confirmed cases (1:4). Factors associated with illness in single variable analysis were work at the processing plant [matched odds ratio (mOR) 22, 95% confidence interval (CI) 2·3–207·7,P<0·01], and residing <1 year in Rio Verde (mOR 7, 95% CI 1·11–43·9,P<0·02). Mass vaccination (>10 000 plant employees) stopped propagation in the plant, but not in the larger community.

scholarly journals Detection of mosquito-only flaviviruses in Europe

2012 ◽  
Vol 93 (6) ◽  
pp. 1215-1225 ◽  
Author(s):  
Mattia Calzolari ◽  
Líbia Zé-Zé ◽  
Daniel Růžek ◽  
Ana Vázquez ◽  
Claire Jeffries ◽  
...  
Keyword(s):  
Czech Republic ◽  
Yellow Fever Virus ◽  
Human Pathogens ◽  
Aedes Vexans ◽  
Pathogenic Role ◽  
The Czech Republic ◽  
Aedes Caspius ◽  
Close Relationship ◽  
The Uk ◽  
Relationship Of

The genus Flavivirus, family Flaviviridae, includes a number of important arthropod-transmitted human pathogens such as dengue viruses, West Nile virus, Japanese encephalitis virus and yellow fever virus. In addition, the genus includes flaviviruses without a known vertebrate reservoir, which have been detected only in insects, particularly in mosquitoes, such as cell fusing agent virus, Kamiti River virus, Culex flavivirus, Aedes flavivirus, Quang Binh virus, Nakiwogo virus and Calbertado virus. Reports of the detection of these viruses with no recognized pathogenic role in humans are increasing in mosquitoes collected around the world, particularly in those sampled in entomological surveys targeting pathogenic flaviviruses. The presence of six potential flaviviruses, detected from independent European arbovirus surveys undertaken in the Czech Republic, Italy,Portugal, Spain and the UK between 2007 and 2010, is reported in this work. Whilst the Aedes flaviviruses, detected in Italy from Aedes albopictus mosquitoes, had already been isolated in Japan, the remaining five viruses have not been reported previously: one was detected in Italy, Portugal and Spain from Aedes mosquitoes (particularly from Aedes caspius), one in Portugal and Spain from Culex theileri mosquitoes, one in the Czech Republic and Italy from Aedes vexans, one in the Czech Republic from Aedes vexans and the last in the UK from Aedes cinereus. Phylogenetic analysis confirmed the close relationship of these putative viruses to other insect-only flaviviruses.

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