Salmonella spp. in pigs: an update on diagnostics and control

Livestock ◽  
2020 ◽  
Vol 25 (1) ◽  
pp. 38-43
Author(s):  
Christina Gale ◽  
Eduardo Velazquez
Keyword(s):  
Animal Health ◽  
Clinical Signs ◽  
Diagnostic Techniques ◽  
Antimicrobial Treatment ◽  
Diagnostics And Control ◽  
Salmonella Spp ◽  
Pig Farms ◽  
And Control ◽  
On Farm

Salmonella spp. is an important topic for both human and animal health, particularly Salmonella enterica ser. Typhimurium including its monophasic strains. Salmonella is an increasing problem on pig farms and the bacteria are transmitted through breeding pyramids, and can spread rapidly due to the high number of subclinical cases. Therefore, diagnosis on farm is extremely important, ensuring sampling from all areas of the unit to gain the overall infection picture. Modern diagnostic techniques allow differentiation between field and vaccine strains which is extremely important when implementing a vaccination programme on the farm. Vaccination accompanied by hygiene and biosecurity measures make up the three pillars of Salmonella spp. control, each of which should be given equal attention. Vaccination has been shown to be very effective in reducing environmental pressure and therefore prevalence and clinical signs due to S. enterica ser. Typhimurium. Vaccination forms part of successful Salmonella spp. control, although it is important to remember that Salmonella spp. control requires a long-term approach using a combination of interventions and avoiding the long-term use of antimicrobial treatment.

scholarly journals Monitoring of fish diseases in the Magadan region

2021 ◽  
Vol 36 ◽  
pp. 07008
Author(s):  
E.A. Vitomskova
Keyword(s):  
Pacific Salmon ◽  
Animal Health ◽  
Natural Populations ◽  
Clinical Signs ◽  
Commercial Fish ◽  
Fish Diseases ◽  
North East ◽  
Comparative Aspect ◽  
Different Seasons

In such a large region as the Far North-East of Russia, there is still no purposeful ichthyopathological study of fish diseases, which has epizootic and epidemiological significance. The material for the study was commercial fish caught in different seasons of 1995-2021. As a result of the research, individuals of natural populations and in aquaculture with clinical signs of infectious and parasitic diseases were found, and cultures of virulent strains of microorganisms were isolated. According to the results of the parasitological study, larvae of nematodes of the family Anisakidae and plerocercoids of cestodes Diphyllobothriidae, which have important epidemiological and epizootic significance, were registered. Based on long-term ichthyopathological studies, a retrospective review of own data was carried out. The analysis of infectious diseases of mature individuals of anadromous Pacific salmon of the genus Oncorhynchus, as well as long-term parasitological monitoring in a comparative aspect of the invasion of commercial fish by helminths dangerous to human and animal health, is presented.

Survey of Salmonella Serotypes Shed in Feces of Beef Cows and Their Antimicrobial Susceptibility Patterns

2000 ◽  
Vol 63 (12) ◽  
pp. 1648-1653 ◽  
Author(s):  
D. A. DARGATZ ◽  
P. J. FEDORKA-CRAY ◽  
S. R. LADELY ◽  
K. E. FERRIS
Keyword(s):  
Animal Health ◽  
Clinical Signs ◽  
Beef Cows ◽  
Herd Size ◽  
National Study ◽  
Salmonella Spp ◽  
Fecal Samples ◽  
Beef Cow ◽  
Common Serotypes ◽  
Cow Calf

Salmonella prevalence on cow-calf operations was studied as a part of a national study of health and management of the U.S. beef cow-calf industry and was conducted as part of the National Animal Health Monitoring System. Within this study, the prevalence of Salmonella spp. shed in feces was determined. A total of 5,049 fecal samples were collected from 187 beef cow-calf operations each visited on a single occasion. The number of fecal samples collected per operation was predetermined based on herd size. Salmonellae were recovered from 1 or more fecal samples collected on 11.2% (21 of 187) of the operations. Overall 78 salmonellae representing 22 serotypes were recovered from 1.4% (70 of 5,049) of samples. Multiple serotypes were recovered from eight samples from a single operation. The five most common serotypes were Salmonella Oranienburg (21.8% of isolates), and Salmonella Cerro (21.8%), followed by Salmonella Anatum (10.3%), Salmonella Bredeney (9.0%), and Salmonella Mbandaka (5.1%). The most common serogroups identified were C1 (33.3%), K (21.8%), B (16.7%), and E (15.4%). Even though the recovery rate of salmonellae from fecal samples was very low, 43.6% (34 of 78) and 38.5% (30 of 78) of the isolates were among the 10 most common serotypes from cattle with clinical signs of disease or isolated from humans, respectively. The majority of the isolates (50 of 78; 64.1%) were recovered from fecal samples from two operations. All isolates were screened for resistance to a panel of 17 antimicrobics, and 87.2% (68 of 78) were susceptible to all of the antimicrobics. The resistant isolates were most commonly resistant to streptomycin (n = 9) and/or sulfamethoxazole (n = 9). Nine isolates showed multiple (≥2 antimicrobics) resistance most commonly to streptomycin and sulfamethoxazole (n = 6).

HEALTH RISKS THAT CAT SCRATCH DISEASE CREATES IN HUMANS, CONTROL AND TREATMENT CHOICES

2021 ◽  
Vol 8 (18) ◽  
pp. 55-63
Author(s):  
Ali BİLGİLİ ◽  
Başak HANEDAN ◽  
Muhammet Haydar UYSAL
Keyword(s):  
Human Health ◽  
Health Risks ◽  
Major Part ◽  
Animal Health ◽  
Clinical Signs ◽  
Cat Scratch Disease ◽  
Domestic Cats ◽  
The World ◽  
Vector Borne ◽  
And Control

It is concluded that animal health affects directly human health considering the fact that major part of diseases in humans result from animals. Bartonella agents are isolated from humans, rodents, rabbits, dogs, ruminants, wild and domestic cats. Bartonella infections are most commonly seen in domestic cats. Cats are considered primary mammalian reservoir in the transmission of zoonotic Bartonella (B.) henselae and B. clarridgeiae infections. Bartonella, vector-borne pathogen commonly appeared in our country and the world, can cause from mild flu signs to severe diseases such as endocarditis, myocarditis, arthritis, hepatitis in humans and animals. After Bartonella infections are transmitted by fleas to cats, cats may remain chronically infected with bacteria for months or years and especially they can transmit the infection to humans by bites or scratches. Cats infected by Bartonella spp. without any clinical signs can transmit the infection to humans. In the context of this review in the light of mentioned knowledge, data were presented for prevalence situations belonging to regions and countries that Bartonella infection commonly occurs in Turkey and the world. In addition, knowledge was given obtained from recent scientific sources for transmission ways of bartonellosis, clinical signs that it causes in humans and animals, diagnosis methods, treatment and control.

scholarly journals In-Water Antibiotic Dosing Practices on Pig Farms

Antibiotics ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 169 ◽  
Author(s):  
Stephen Little ◽  
Andrew Woodward ◽  
Glenn Browning ◽  
Helen Billman-Jacobe
Keyword(s):  
Clinical Signs ◽  
Bacterial Pathogen ◽  
Systemic Exposure ◽  
Antibiotic Use ◽  
Structured Interview ◽  
Online Questionnaire ◽  
Pig Farms ◽  
Usage Patterns ◽  
And Control ◽  
Antibiotic Dosing

Pigs reared on many farms are mass-medicated for short periods with antibiotics through their drinking water to control bacterial pathogen loads and, if a disease outbreak occurs, to treat pigs until clinical signs are eliminated. Farm managers are responsible for conducting in-water antibiotic dosing events, but little is known about their dosing practices. We surveyed managers of 25 medium to large single-site and multi-site pig farming enterprises across eastern and southern Australia, using a mixed methods approach (online questionnaire followed by a one-on-one semi-structured interview). We found wide variation in the antibiotics administered, the choice and use of dosing equipment, the methods for performing dosing calculations and preparing antibiotic stock solutions, the commencement time and duration of each daily dosing event, and the frequency of administration of metaphylaxis. Farm managers lacked data on pigs’ daily water usage patterns and wastage and the understanding of pharmacology and population pharmacometrics necessary to optimize in-water dosing calculations and regimens and control major sources of between-animal variability in systemic exposure of pigs to antibiotics. There is considerable scope to increase the effectiveness of in-water dosing and reduce antibiotic use (and cost) on pig farms by providing farm managers with measurement systems, technical guidelines, and training programs.

scholarly journals Autres orbivirus : Mise à jour des informations sur la peste équine africaine et la maladie hémorragique épizootique en Europe et dans le bassin méditerranéen

2009 ◽  
Vol 62 (2-4) ◽  
pp. 92
Author(s):  
M. Martinez ◽  
B. Rodriguez ◽  
J. M. Sanchez-Vizcaino
Keyword(s):  
Animal Health ◽  
Diagnostic Techniques ◽  
Social Consequences ◽  
Control Measures ◽  
Effective Vaccine ◽  
African Countries ◽  
Bassin Méditerranéen ◽  
Haemorrhagic Disease ◽  
Educational Campaigns ◽  
And Control

Orbiviruses are vector-borne pathogens that can cause notifi­able diseases in animals, such as bluetongue (BT) and epizootic haemorrhagic disease of deer (EHD) in ruminants, or African horse sickness (AHS) in equines. The relatively recent expansion of BT in Europe to higher latitudes than expected has evidenced the need to explore the ways of introduction and exposure of other orbiviruses in Europe and in the Mediterranean Basin. AHS was successfully eradicated from Europe since the 1990s but continues to be endemic in many African countries. Of the nine AHS serotypes, two have been present in Mediterranean coun­tries: AHS-9 (1966) and AHS-4 (1987-1990). The last outbreaks (up to 2008) of AHS in Africa classified by serotype occurred in Senegal (AHS-9), Kenya (AHS-4), and Nigeria, Senegal and Ethiopia (AHS-2). EHD is caused by 10 serotypes and is notifi­able to the World Organisation for Animal Health (OIE) since 2008. It is present in America, Australia, Asia and Africa and is known to affect wild ruminants as well as cattle. EHD has been present in cattle in North Africa (EHD-9) and the Middle East (EHD-7) since 2006. Transport of infected Culicoides from Northern Africa to Southern Europe by wind is a proved way of orbivirus introduction. Import of infected asymptomatic animals from an endemic country also happened the first time AHS was introduced in Spain. Then, certain environmental conditions such as warm temperatures can favour perpetuation of the dis­ease in animals exposed to infected vectors. The frequent con­sideration of horses as expensive leisure animals can worsen the economic and social consequences of a possible outbreak. However, nowadays there are good diagnostic techniques for AHS. Eradication can be achieved with the available polyvalent live vaccines and control measures. This is not the case for EHD, because an effective vaccine is urgently needed and there have been cross-reactions in the diagnoses between BT and EHD. European countries can prepare against other orbivirus outbreaks by prevention through educational campaigns and inactivated vaccine banks for AHS, and by further research on the possible vectors, the overwintering capacity of certain orbiviruses, the infectivity in all affected species, the identification of other pos­sible reservoirs, and the development of risk assessments and modelling.

scholarly journals Latest trends in L. infantum infection in dogs in Spain (Part II): current clinical management and control according to a national survey in practitioners

2020 ◽  
Author(s):  
Ana Montoya ◽  
Rosa Gálvez ◽  
Rocio Checa ◽  
Juliana Sarquis ◽  
Alexandra Plaza ◽  
...  
Keyword(s):  
Clinical Management ◽  
Complete Blood Count ◽  
Clinical Signs ◽  
Diagnostic Techniques ◽  
Control Measures ◽  
Canine Leishmaniosis ◽  
Cutaneous Lesions ◽  
Treatment Protocols ◽  
And Control ◽  
Monitoring Treatment

Abstract Background Canine leishmaniosis (CanL) is a parasitic zoonotic disease, endemic in the Mediterranean basin including Spain. While knowledge about CanL, its management, treatment, prevention and control mounts, it remains unclear whether all clinical veterinarians follow the same international recommendations, such as those of the LeishVet group. This study was thus designed to assess recent trends in the clinical management of CanL in veterinary clinics across Spain through a questionnaire-based survey. Results were compared with those of our prior national multicenter questionnaire administered by our research team in 2005. Methods A questionnaire consisting of 28 questions about CanL was developed using Google Forms and distributed by email to 1428 veterinary clinics in Spain. Questions were designed to obtain data on common clinical signs, techniques and complementary exams used to diagnose the disease, and on its monitoring, treatment and control measures. Data were collected in a database for statistical analysis. Results Completed questionnaires were returned by 295 clinics. Compared to the situation in 2005, replies indicate that clinical signs of CanL have not changed significantly, cutaneous lesions being still the most prevalent sign observed by practitioners. Quantitative serological techniques are considered an adequate approach to diagnosis, provided their results are supported by the findings of a thorough physical exam, as well as complementary tests (complete blood count (CBC), biochemical profile, plasma protein electrophoretogram and complete urinalysis). Treatment protocols and check-ups follow international recommendations. Finally, a multimodal approach is being endorsed to adequately control CanL including preventive measures such as: annual serological check-ups and the combination of repellents and vaccines. Besides, owners are being better informed about CanL by veterinarians, which translates to the improved control of this zoonosis. Conclusions The clinical management of CanL has recently undergone significant changes owing to improvements in clinical knowledge of the disease, more unified international criteria, improved diagnostic techniques and their adequate interpretation, as well as a greater awareness of the disease transmitted to owners.

scholarly journals Animal Reservoirs and Hosts for Emerging Alpha- and Betacoronaviruses

2020 ◽  
Author(s):  
Ria Ghai ◽  
Ann Carpenter ◽  
Meghan Herring ◽  
Krystalyn Martin ◽  
Susan Gerber ◽  
...  
Keyword(s):  
One Health ◽  
Clinical Presentation ◽  
Animal Health ◽  
Companion Animals ◽  
Clinical Signs ◽  
Disease Outbreaks ◽  
Limited Information ◽  
Global Pandemic ◽  
And Control ◽  
Animal Reservoirs

The ongoing global pandemic caused by coronavirus disease 2019 (COVID-19) has once again demonstrated the significance of the Coronaviridae family in causing human disease outbreaks. As SARS-CoV-2 was first detected in December 2019, information on its tropism, host range, and clinical presentation in animals is limited. Given the limited information, data from other coronaviruses may be useful to inform scientific inquiry, risk assessment and decision-making. We review the endemic and emerging alpha- and betacoronavirus infections of wildlife, livestock, and companion animals, and provide information on the receptor usage, known hosts, and clinical signs associated with each host for 15 coronaviruses discovered in people and animals. This information can be used to guide implementation of a One Health approach that involves human health, animal health, environmental, and other relevant partners in developing strategies for preparedness, response, and control to current and future coronavirus disease threats.

scholarly journals Rabies Virus Infection in Livestock

2021 ◽  
Author(s):  
Abdelmalik I. Khalafalla ◽  
Yahia H. Ali
Keyword(s):  
Animal Health ◽  
Clinical Signs ◽  
Small Ruminants ◽  
Control Measures ◽  
Farm Animals ◽  
Modes Of Transmission ◽  
Dead End ◽  
Rabies Virus Infection ◽  
Prevention And Control Measures ◽  
And Control

Rabies is a lethal zoonotic encephalomyelitis and a major challenge to public and animal health. Livestock are affected by rabies mostly through bites of rapid dogs or wildlife carnivore\'s species. They are considered as ‘dead-end’ hosts that do not transmit the virus. Rabies in livestock has been endemic in many developing countries for many years and diagnosed through clinical signs and dog-biting history. An introduction on rabies situation in farm animals will be given then subchapters including `rabies in bovines, rabies in small ruminants, rabies in swine and rabies in camelids. In each subchapter we shall discuss, epidemiology, modes of transmission, diagnosis and prevention and control measures.

scholarly journals Understanding Antibiotic Residues and Pathogens Flow in Wastewater from Smallholder Pig Farms to Agriculture Field in Ha Nam Province, Vietnam

2020 ◽  
Vol 14 ◽  
pp. 117863022094320
Author(s):  
Phuc Pham-Duc ◽  
Hung Nguyen-Viet ◽  
Toan Luu-Quoc ◽  
Meghan A Cook ◽  
Phuong Trinh-Thi-Minh ◽  
...  
Keyword(s):  
Animal Health ◽  
Antibiotic Use ◽  
Cross Sectional Study ◽  
Antibiotic Residues ◽  
Livestock Waste ◽  
Salmonella Spp ◽  
Livestock Wastewater ◽  
Cross Sectional ◽  
Pig Farms ◽  
Wastewater Samples

Background: Contact with livestock wastewater on farms and in communities can pose a risk to human and animal health. Methods: This cross-sectional study was conducted in 180 households and 24 pig farms (96 wastewater samples) to explore information about pig production, livestock waste management, antibiotic use, and to analyze antibiotic residues and microbial contamination, respectively. Results: Of the 120 households raising pigs, biogas systems were the most commonly used to treat animal waste (70%), followed by compositing (19%), and the remaining respondents discharged waste directly into drains or ponds (11%). The majority of respondents (78%) used antibiotics to treat and prevent disease in pigs, but 32% of them did not know of any disadvantages of antibiotic abuse. ELISA assays were performed on half of the wastewater samples (n = 48), demonstrating that residues of flouroquinolones and sulfonamides were present in 6.3% (3/48) and 22.9% (11/48) of tested samples, respectively. The average residual level of sulfamethazine was 27.8 ug/l. Further, E. coli concentrations exceeding regulatory levels in Vietnam were found in nearly all samples. Salmonella spp. was also found in 57.3% of samples, though prevalence rates varied across the different sites. Finally, G. lamblia was found in 8.4% of samples, and C. parvum was found in 5.2% of samples. Conclusions: This study suggests that livestock wastewater carried potential harmful pathogens and antibiotic residues that could come into contact with humans in the community. Thus, appropriate operation and application of livestock wastewater treatment (such as biogas or composting) and management should be a continued focused.

scholarly journals Haemoparasites infection in bullfighting cattle in southern of Thailand

2020 ◽  
Vol 19 (2) ◽  
pp. 133-140
Author(s):  
Ruttayaporn Ngasaman ◽  
◽  
Narissara Keawchana ◽  
Pirayu Rakwong ◽  
◽  
...  
Keyword(s):  
Animal Health ◽  
Clinical Signs ◽  
Economic Losses ◽  
Pale Mucous Membrane ◽  
Blood Smears ◽  
Southern Thailand ◽  
And Control ◽  
Transmission Of Disease ◽  
Babesia Spp ◽  
Theileria Spp

Haemoparasites affect animal health and the production leading to economic losses and may have effects on human health. In Thailand, there are few reports of infections in the bullfighting cattle are for cultural fighting competitions. Therefore, this research aimed to investigate the distribution of haemoparasites infection in bullfighting cattle in order to control the transmission of disease to the local domestic cattle. A total of 1906 blood samples were collected from the bullfighting cattle from eight provinces in southern Thailand from 2017 to 2020. Those cattle showed the clinical signs of gasping, pale mucous membrane, haematuria, anorexia, sneezing and weakness. Micro-haematocrit centrifugation and thin blood smears with Giemsa’s staining were used. The results indicated 42.50% (810/1906) of cases positive for haemoparasites infection. The most commonly found was Theileria spp. (38.20%, 728/1906) followed by microfilaria of Setaria spp. (2.68%, 51/1906), Trypanosoma spp. (1.21%, 23/1906), Babesia spp. (0.94%, 18/1906) and Anaplasma spp. (0.10%, 2/1906). Out of 810 positive samples, there was co-infection between Theileria spp. and Setaria spp. (1.36%, 11/810), Theileria spp. and Babesia spp. (0.99%, 8/810), and Theileria spp., Trypanosoma spp. and Setaria spp. (0.37%, 3/810). The distribution of haemoparasites infection in eight raising areas ranged from 39.71 to 75%, with no significantly differences. From this result is was determined that haemoparasites were of generalised distribution in southern Thailand. Therefore, there should be strict surveillance and control of movement of cattle into the fighting arena. Moreover, vector control and blood checking before fighting should be promoted.

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