Concurrent infection with enteric protozoa and Erysipelothrix rhusiopathiae in chicken and pheasant flocks

1997 ◽  
Vol 141 (13) ◽  
pp. 340-341 ◽  
Author(s):  
E. M. Milne ◽  
R. S. Windsor ◽  
F. Rogerson ◽  
T. W. Pennycott
Keyword(s):  
Concurrent Infection ◽  
Erysipelothrix Rhusiopathiae ◽  
Enteric Protozoa

Polyarthritiden durch Erysipelothrix rhusiopathiae als Bestandsproblem in einem Milchschafbetrieb

2007 ◽  
Vol 35 (03) ◽  
pp. 203-209
Author(s):  
P. Pfister ◽  
N. Wollschläger ◽  
M. Kirchhofer
Keyword(s):  
Erysipelothrix Rhusiopathiae ◽  
Klinische Relevanz

Zusammenfassung Gegenstand und Ziel: Beschrieben wird ein Fall von Lahmheiten verursacht durch Erysipelothrix rhusiopathiae bei Lämmern einer Milchschafherde. Der Fallbericht zeigt die Aufarbeitung eines Bestandsproblems in einer Schafherde auf. Material und Methoden: Im Oktober 2006 erkrankten in einem Milchschafbetrieb mit 240 Muttertieren mehrere zwei bis acht Wochen alte Lämmer an leicht- bis mittelgradigen Lahmheiten. Ein drei Wochen altes Lamm wurde an die Wiederkäuerklinik der Vetsuisse-Fakultät Bern überwiesen und dort einer klinischen Untersuchung sowie einer ausführlichen Lahmheitsuntersuchung inklusive Synoviaanalyse unterzogen. Aufgrund eines verschlechterten Allgemeinzustands wurde das Tier euthanasiert und pathologisch-anatomisch untersucht. Zur weiteren Aufarbeitung fand ein Besuch des Betriebes statt mit Beurteilung von Haltung und Management. Zwei klinisch lahmen Lämmern wurde je ein Gelenkpunktat entnommen. Ein Kümmerer wurde euthanasiert und der Sektion zugeführt. Blutproben von drei neugeborenen Lämmern dienten als Material für eine Serumelektrophorese. Ergebnisse: In den drei Gelenkpunktaten ließ sich E. rhusiopathiae nachweisen. Die Sektion ergab bei beiden Lämmern chronisch fibrinöse Polyarthritiden. Die Serumelektrophorese zeigte, dass die Kolostrumversorgung der drei untersuchten Lämmer nur knapp ausreichte. In dem Betrieb wurden zusätzlich 80 Mastschweine gehalten, die direkten Kontakt zu den Schafen hatten. Sieben Monate zuvor war der Schlachtkörper eines Mastschweins wegen Rotlauf konfisziert worden. Dem Tierhalter wurde empfohlen, die Schafe gegen Rotlauf zu impfen und die Schweine aus dem Betrieb zu entfernen. Diese Empfehlungen wurden umgesetzt und es erkrankten keine weiteren Lämmer an Polyarthritiden. Schlussfolgerung: Die Aufarbeitung dieses Falls zeigt, dass bei gemeinsamer Haltung von Schafen und Schweinen und Auftreten von Polyarthritiden bei Schafen an eine Infektion mit E. rhusiopathiae zu denken ist. Klinische Relevanz: Bei Erkrankungen mehrerer Tiere eines Bestandes ist zur ganzheitlichen Beurteilung eine Bestandsabklärung vor Ort zu empfehlen.

Exposure of the Gulf of St. Lawrence grey seal Halichoerus grypus population to potentially zoonotic infectious agents

2020 ◽  
Vol 142 ◽  
pp. 105-118
Author(s):  
CC Sauvé ◽  
A Hernández-Ortiz ◽  
E Jenkins ◽  
F Mavrot ◽  
A Schneider ◽  
...  
Keyword(s):  
Meat Products ◽  
Halichoerus Grypus ◽  
Human Consumption ◽  
Infectious Agents ◽  
Erysipelothrix Rhusiopathiae ◽  
Public Health Significance ◽  
Domestic Livestock ◽  
Health Significance ◽  
Commercial Source ◽  
Polymerase Chain

The population of grey seals Halichoerus grypus in Canadian waters is currently used as a commercial source of meat for human consumption. As with domestic livestock, it is important to understand the occurrence in these seals of infectious agents that may be of public health significance and thus ensure appropriate measures are in place to avoid zoonotic transmission. This study examined the prevalence of antibodies against Brucella spp., Erysipelothrix rhusiopathiae, 6 serovars of Leptospira interrogans, and Toxoplasma gondii in 59 grey seals and determined by polymerase chain reaction (PCR) the presence of these potentially zoonotic agents in specific organs and tissues of seropositive animals. The presence of encysted Trichinella spp. larvae was also investigated by digestion of tongue, diaphragm and other muscle samples, but none were detected. Seroprevalence against Brucella spp. and E. rhusiopathiae was low (5 and 3%, respectively). All 59 seals tested had antibodies against L. interrogans, but no carrier of this bacterium was detected by PCR. Seroprevalence against T. gondii was 53%, and DNA of this protozoan was detected by PCR in 11/30 (37%) seropositive animals. Standard sanitary measures mandatory for commercialization of meat products for human consumption should greatly reduce the potential for exposure to these infectious agents. However, special consideration should be given to freezing seal meat for at least 3 d to ensure destruction of tissue cysts of T. gondii.

Experimental Study of the Impact of Alisma plantago-aquatica Secretions on Pathogenic Bacteria

2014 ◽  
Vol 1 (3) ◽  
pp. 3-7
Author(s):  
O. Zhukorskyy ◽  
O. Hulay
Keyword(s):  
Pathogenic Bacteria ◽  
Initial Density ◽  
Biologically Active ◽  
Erysipelothrix Rhusiopathiae ◽  
Natural Focus ◽  
Test Species ◽  
Popula Tions ◽  
And Control ◽  
The Impact

Aim. To estimate the impact of in vivo secretions of water plantain (Alisma plantago-aquatica) on the popula- tions of pathogenic bacteria Erysipelothrix rhusiopathiae. Methods. The plants were isolated from their natural conditions, the roots were washed from the substrate residues and cultivated in laboratory conditions for 10 days to heal the damage. Then the water was changed; seven days later the selected samples were sterilized using fi lters with 0.2 μm pore diameter. The dilution of water plantain root diffusates in the experimental samples was 1:10–1:10,000. The initial density of E. rhusiopathiae bacteria populations was the same for both experimental and control samples. The estimation of the results was conducted 48 hours later. Results. When the dilution of root diffusates was 1:10, the density of erysipelothrixes in the experimental samples was 11.26 times higher than that of the control, on average, the dilution of 1:100 − 6.16 times higher, 1:1000 – 3.22 times higher, 1:10,000 – 1.81 times higher, respectively. Conclusions. The plants of A. plantago-aquatica species are capable of affecting the populations of E. rhusiopathiae pathogenic bacteria via the secretion of biologically active substances into the environment. The consequences of this interaction are positive for the abovementioned bacteria, which is demon- strated by the increase in the density of their populations in the experiment compared to the control. The intensity of the stimulating effect on the populations of E. rhusiopathiae in the root diffusates of A. plantago-aquatica is re- ciprocally dependent on the degree of their dilution. The investigated impact of water plantain on erysipelothrixes should be related to the topical type of biocenotic connections, the formation of which between the test species in the ecosystems might promote maintaining the potential of natural focus of rabies. Keywords: Alisma plantago-aquatica, in vivo secretions, Erysipelothrix rhusiopathiae, population density, topical type of connections.

Changes in the Population Density of Pathogenic Microorganisms in Response to the Allelopathic Effect of Thypha Latifolia

2014 ◽  
Vol 1 (1) ◽  
pp. 31-36 ◽  
Author(s):  
O. Zhukorskiy ◽  
O. Gulay ◽  
V. Gulay ◽  
N. Tkachuk
Keyword(s):  
Cell Density ◽  
Allelopathic Effect ◽  
Pathogenic Microorganisms ◽  
Sterile Water ◽  
Erysipelothrix Rhusiopathiae ◽  
Pathogenic Leptospira ◽  
Favorable Conditions ◽  
And Control ◽  
The Impact ◽  
Control Samples

Aim. To determine the response of the populations of Erysipelothrix rhusiopathiae and Leptospira interrogans pathogenic microorganisms to the impact of broadleaf cattail (Thypha latifolia) root diffusates. Methods. Aqueous solutions of T. latifolia root diffusates were sterilized by vacuum fi ltration through the fi lters with 0.2-micron pore diameter. The experimental samples contained cattail secretions, sterile water, and cultures of E. rhusiopathiae or L. interrogans. The same amount of sterile water, as in the experimental samples, was used for the purpose of control, and the same quantity of microbial cultures was added in it. After exposure, the density of cells in the experimental and control samples was determined. Results. Root diffusates of T. latifolia caused an increase in cell density in the populations of E. rhusiopathiae throughout the whole range of the studied dilutions (1:10–1:10000). In the populations of the 6 studied serological variants of L. interrogans spirochetes (pomona, grippotyphosa, copenhageni, kabura, tarassovi, canicola), the action of broadleaf cattail root diffusates caused the decrease in cell density. A stimulatory effect was marked in the experimental samples of the pollonica serological variant of leptospira. Conclusions. The populations of E. rhusiopathiae and L. interrogans pathogenic microorganisms respond to the allelopathic effect of Thypha latifolia by changing the cell density. The obtained results provide the background to assume that broadleaf cattail thickets create favorable conditions for the existence of E. rhusiopathiae pathogen bacteria. The reduced cell density of L. interrogans in the experimental samples compared to the control samples observed under the infl uence of T. latifolia root diffusates suggests that reservoirs with broadleaf cattail thickets are marked by the unfavorable conditions for the existence of pathogenic leptospira (except L. pollonica).

Hygienic risk assessment by monitoring pathogens in municipal sewage

2002 ◽  
Vol 2 (3) ◽  
pp. 23-28 ◽  
Author(s):  
C.-H. von Bonsdorff ◽  
L. Maunula ◽  
R.M. Niemi ◽  
R. Rimhanen-Finne ◽  
M.-L. Hänninen ◽  
...  
Keyword(s):  
Enteric Viruses ◽  
Detection Methods ◽  
Municipal Sewage ◽  
Small Community ◽  
E Coli ◽  
Cryptosporidium Oocysts ◽  
High Concentrations ◽  
One Year ◽  
Enteric Protozoa ◽  
Day Care Centre

The purpose of this study was to monitor the levels of human enteric viruses and enteric protozoa and to relate their presence to the microbes used as hygienic quality indicators in domestic sewage from a small community in Finland during a period of one year. Genome-based sensitive detection methods for the pathogens selected (astro- and Norwalk-like viruses, Giardia and Cryptosporidium) have become available only recently and thus no earlier data was available. The effluent sewage is delivered into a river that serves as raw water for a larger town and the pathogens therefore constitute a health risk. The results showed that all the monitored pathogens could be detected, and that enteric viruses were present at considerable concentrations in sewage. High concentrations of astrovirus in raw sewage were observed during a diarrhea epidemic in the local day-care centre. The presence of viruses did not correlate with the monitored bacterial indicators of faecal contamination (coliforms, E. coli and enterococci) or with bacteriophages (somatic coliphages, F-specific RNA phages and B. fragilis phages). Giardia cysts and Cryptosporidium oocysts were detected from one sample (1/10) each.

scholarly journals An Autopsy Case of Erysipelothrix Rhusiopathiae Endocarditis

2008 ◽  
Vol 47 (15) ◽  
pp. 1437-1440 ◽  
Author(s):  
Yoshihiro Yamamoto ◽  
Kei Shioshita ◽  
Takahiro Takazono ◽  
Masafumi Seki ◽  
Koichi Izumikawa ◽  
...  
Keyword(s):  
Erysipelothrix Rhusiopathiae ◽  
Autopsy Case

scholarly journals Future perspectives on swine viral vaccines: where are we headed?

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Tanja Opriessnig ◽  
Ashley A. Mattei ◽  
Anbu K. Karuppannan ◽  
Patrick G. Halbur
Keyword(s):  
Fifteenth Century ◽  
Molecular Engineering ◽  
Erysipelothrix Rhusiopathiae ◽  
Herd Health ◽  
Live Virus ◽  
Nucleic Acid Vaccines ◽  
Recent Trends ◽  
Viral Vaccines ◽  
Virus Strains ◽  
British Physician

AbstractDeliberate infection of humans with smallpox, also known as variolation, was a common practice in Asia and dates back to the fifteenth century. The world’s first human vaccination was administered in 1796 by Edward Jenner, a British physician. One of the first pig vaccines, which targeted the bacterium Erysipelothrix rhusiopathiae, was introduced in 1883 in France by Louis Pasteur. Since then vaccination has become an essential part of pig production, and viral vaccines in particular are essential tools for pig producers and veterinarians to manage pig herd health. Traditionally, viral vaccines for pigs are either based on attenuated-live virus strains or inactivated viral antigens. With the advent of genomic sequencing and molecular engineering, novel vaccine strategies and tools, including subunit and nucleic acid vaccines, became available and are being increasingly used in pigs. This review aims to summarize recent trends and technologies available for the production and use of vaccines targeting pig viruses.

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