scholarly journals High level of contamination of antimicrobial drug resistant non-typhoidal Salmonella enterica in commercial poultry and its surroundings in Chitwan, Nepal

2020 ◽  
Author(s):  
Amy Nelson ◽  
Sulochana Manandhar ◽  
Juliana Ruzante ◽  
Arrogya Gyawali ◽  
Bimala Dhakal ◽  
...  

Abstract BackgroundAntimicrobial resistance (AMR) among bacterial pathogens is a fast-growing public health concern. AMR in non-typhoidal Salmonella species among food animals is of special concern as this may transmit resistant pathogens to humans during handling or consumption of animal products. In Nepal, the possibility of AMR Salmonella species among food animals is an important area of research, particularly in light of the rapidly growing poultry industry, lack of surveillance, and paucity of studies that have been conducted. MethodsTaking one health approach, a cross-sectional study was carried out in Chitwan district of Nepal between May and October 2017. Various environmental samples viz. farm litter, feed, water, poultry feces, vehicle swabs, farm swabs from 12 broiler poultry farms and various sections of poultry carcasses from 21 slaughter houses were aseptically collected. These were microbiologically assessed for the presence of non-typhoidal Salmonella and their phenotypic and genotypic indicators of antimicrobial resistance. ResultsOverall, Of 62 environmental samples collected, 31(50%) tested positive for Salmonella enterica serovars with environmental swabs (70%, 8/12) being the most culture positive sample types. Similarly, of 159 tissue samples collected from 24 carcasses, 79% (126/159) were culture positive for Salmonella enterica. Nearly 97% (153/157), 11% (17/157), 5% (8/157) and none of isolates showed resistance to tetracycline, ciprofloxacin, azithromycin and meropenem respectively. Some 83% (131/157), 40% (64/157), 8% (13/157) and 0.6% (1/157) of isolates tested positive for tetA, QrnS, mefA and VIM-1 AMR genes corresponding to the above antimicrobials respectively.ConclusionsThis study revealed gross contamination of farms and subsequent poultry meat samples with Salmonella enterica serovars that were resistant to several clinically applicable antimicrobials. This reinforces an urgent need to implement proper biosecurity approaches from farms to slaughter houses and strengthen policies to cease the rampant use of clinically important antimicrobials in poultry.

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Amy Nelson ◽  
Sulochana Manandhar ◽  
Juliana Ruzante ◽  
Arrogya Gywali ◽  
Bimala Dhakal ◽  
...  

Abstract Background Antimicrobial resistance (AMR) among bacterial pathogens is a fast-growing public health concern. AMR in non-typhoidal Salmonella serovars (NTS) among food animals is of special concern as this may transmit resistant pathogens to humans during handling or consumption of animal products. In Nepal, the possibility of AMR Salmonella serovars among food animals is an important area of research, particularly in light of the rapidly growing poultry industry, lack of surveillance and proper biosecurity measures; and paucity of relevant data. This study was conducted with the aim to estimate the burden of NTS and associated antimicrobial resistance in the environments of commercial poultry farms and the poultry carcasses in slaughter house. This study also intends to find some basic knowledge of the poultry farmers and their practice relating to the use of antimicrobials, vaccination and biosecurity measures. Methods Taking one health approach, a cross-sectional study was carried out in Chitwan district of Nepal between May and October 2017. Various environmental samples viz. farm litter, feed, water, poultry faeces, vehicle swabs, farm swabs from 12 broiler poultry farms and various sections of poultry carcasses from 21 slaughter houses were aseptically collected. These were microbiologically assessed for the presence of NTS serovars and their phenotypic and genotypic indicators of antimicrobial resistance. The poultry farmers were also briefly interviewed regarding their basic biosecurity related knowledge and practices before collecting the environmental samples. Results Overall, of total environmental samples collected, 50% (31/62) tested positive for NTS serovars with environmental swabs (70%, 8/12) being the most culture positive sample types. Similarly, of 159 tissue samples collected from 24 carcasses, 79% (126/159) were culture positive for NTS serovars. Nearly 97% (153/157) of isolates showed antimicrobial resistance to tetracycline, while 11% (17/157) to ciprofloxacin and 5% (8/157) of isolates were resistant against azithromycin. All 157 isolates were sensitive to meropenem. In terms of AMR genes, tetA (83%, 131/157), QrnS (40%,64/157), mefA (8%, 13/157) and VIM-1 (0.6%, 1/157) were detected in the isolates that corresponded to the AMR to tetracycline, ciprofloxacin, azithromycin and meropenem respectively. In farmers interview, only 42% (5/12) of farmers mentioned of using basic biosecurity measures such as applying lime powder around the farm; 84% (10/12) of farmers reported vaccinating their birds with some vaccine and 75% (9/12) of farmers used various antimicrobials prophylactically such as neomycin (33%, 4/12), colistin (33%, 4/12), furaltadone (33%, 4/12), doxycycline (25%, 3/12), sulfatrimethoprim (25%, 3/12) and tylosin (16%, 2/12). Conclusions This study revealed gross contamination of farm environment and subsequent poultry meat samples with NTS serovars that were resistant to several clinically important antimicrobials. Further, inadequacy of even basic biosecurity measures and frequent prophylactic use of antimicrobials in the commercial poultry farms was observed. This reinforces an urgent need to raise awareness and implement proper biosecurity approaches from farms to slaughter houses in order to reduce the burden of NTS contamination of surrounding environment and poultry products. Further, high prevalence AMR among NTS isolates also underscores the need to strengthen the policies to prevent the rampant use of clinically used human antimicrobials in poultry sector.


2020 ◽  
Author(s):  
Amy Nelson ◽  
Sulochana Manandhar ◽  
Juliana Ruzante ◽  
Arrogya Gyawali ◽  
Bimala Dhakal ◽  
...  

Abstract Background Antimicrobial resistance (AMR) among bacterial pathogens is a fast-growing public health concern. AMR in non-typhoidal Salmonella serovars (NTS) among food animals is of special concern as this may transmit resistant pathogens to humans during handling or consumption of animal products. In Nepal, the possibility of AMR Salmonella serovars among food animals is an important area of research, particularly in light of the rapidly growing poultry industry, lack of surveillance and proper biosecurity measures; and paucity of relevant data. This study was conducted with the aim to estimate the burden of NTS and associated antimicrobial resistance in the environments of commercial poultry farms and the poultry carcasses in slaughter house. This study also intends to find some basic knowledge of the poultry farmers and their practice relating to the use of antimicrobials, vaccination and biosecurity measures.. Methods Taking one health approach, a cross-sectional study was carried out in Chitwan district of Nepal between May and October 2017. Various environmental samples viz. farm litter, feed, water, poultry faeces, vehicle swabs, farm swabs from 12 broiler poultry farms and various sections of poultry carcasses from 21 slaughter houses were aseptically collected. These were microbiologically assessed for the presence of NTS serovars and their phenotypic and genotypic indicators of antimicrobial resistance. The poultry farmers were also briefly interviewed regarding basic their basic biosecurity related knowledge and practices before collecting the environmental samples.Results Overall, of total environmental samples collected, 50% (31/62) tested positive for NTS serovars with environmental swabs (70%, 8/12) being the most culture positive sample types. Similarly, of 159 tissue samples collected from 24 carcasses, 79% (126/159) were culture positive for NTS serovars. Nearly 97% (153/157) of isolates showed antimicrobial resistance to tetracycline, while 11% (17/157) to ciprofloxacin and 5% (8/157) of isolates were resistant against azithromycin. All 157 isolates were sensitive to meropenem. In terms of AMR genes, tetA (83%, 131/157), QrnS (40%,64/157), mefA (8%, 13/157) and VIM-1 (0.6%, 1/157) were detected in the isolates that corresponded to the AMR to tetracycline, ciprofloxacin, azithromycin and meropenem respectively. In farmers interview, only 42% (5/12) of farmers mentioned of using basic biosecurity measures such as applying lime powder around the farm; 84% (10/12) of farmers reported vaccinating their birds with some vaccine and 75% (9/12) of farmers used various antimicrobials prophylactically such as neomycin (33%, 4/12), colistin (33%, 4/12), furaltadone (33%, 4/12), doxycycline (25%, 3/12), sulfatrimethoprim (25%, 3/12) and tylosin (16%, 2/12).Conclusions This study revealed gross contamination of farm environment and subsequent poultry meat samples with NTS serovars that were resistant to several clinically important antimicrobials. Further, inadequacy of even basic biosecurity measures and frequent prophylactic use of antimicrobials in the commercial poultry farms was observed. This reinforces an urgent need to raise awareness and implement proper biosecurity approaches from farms slaughter houses in order to reduce the burden of NTS contamination of surrounding environment and poultry products. Further, high prevalence AMR among NTS isolates also underscores the need to strengthen the policies to prevent the rampant use of clinically used human antimicrobials in poultry sector.


2020 ◽  
Vol 24 (1) ◽  
Author(s):  
Gezahegne Mamo

A cross-sectional abattoir-based study was conducted in apparently healthy chicken in Bishoftu town, Ethiopia to estimate the prevalence of avian tuberculosis and isolate its causative agent. The occurrence of avian tuberculosis was investigated using postmortem examination, bacteriological culture and acid-fast staining methods. Of the total 648 chicken examined to detect avian tuberculosis, 42 tissue samples showing gross pathological tuberculous-like lesions were collected from liver, spleen and intestine. The overall prevalence of avian tuberculosis in poultry was 6.48% (42/648) (95%CI: 4.53-8.38) on the basis of detailed postmortem examination. Out of 42 tissue samples cultured on Lowenstein-Jensen medium, 14 (33.3%) were bacteriologically culture positive and showed growth of dough-shaped smooth colony characteristic and out of these 14 culture positive samples, 5 (35.7%) were acid-fast positive mycobacteria. Statistical significant difference was observed in the prevalence of avian TB among chicken with different body condition scoring (χ2 = 23.593, p =0.001). Multivariable logistic regression analysis for risk factors showed that body condition scoring has a high statistical significant association with the prevalence of avian tuberculosis in the study area (p<0.05). Poor body conditioned chicken were more likely to show TB lesions (OR=4.45, 95% CI, 2.33- 8.52) than good body conditioned chicken. The present preliminary study on avian TB using postmortem lesion examination and microbiological methods revealed the occurrence of avian TB in low prevalence inapparently healthy chicken originated from intensive poultry farms in Bishoftu area; hence detail poultry meat inspection should be practiced at poultry abattoirs in order to reduce the public health risk. Keywords: Abattoir, Avian tuberculosis, Postmortem examination, Poultry, Ethiopia


2019 ◽  
Vol 32 (1) ◽  
pp. 118-123
Author(s):  
Anna C. Fagre ◽  
Kristy L. Pabilonia ◽  
Matthew S. Johnston ◽  
Paul S. Morley ◽  
Brandy A. Burgess

In the United States, ~1.4 million sporadic human Salmonella enterica infections occur annually, with an estimated 6% attributable to reptile exposure. Detection of Salmonella in reptiles can be challenging given the limitations among detection methods. We evaluated sampling and detection methods for S. enterica in a cross-sectional study of reptilian patients ( n = 45) over the course of 13 mo. Two sampling methods (cloacal swabs, electrostatic cloth body-feet samples) and 3 detection methods (enriched culture, lateral flow immunoassay [LFI], real-time PCR) were compared using McNemar and Fisher exact tests. Results varied by species, sample type, and detection method. In total, 14 of 45 (33%) patients were positive by culture, 10 of 45 (22%), and/or 13 of 45 (29%) by rtPCR. Among rtPCR-positive results, cloacal swabs (12 of 45 [27%]) resulted in a higher detection than body-feet wipes (4 of 45 [9%]; p = 0.01). Among culture-positive results, shedding was most commonly detected after additional incubation at room temperature when testing cloacal swabs (9 of 45 [20%]). However, there was significant disagreement between sampling methods (cloacal vs. body-feet; p = 0.03). No samples were positive by LFI. In general, cloacal swabs yielded the highest test-positive rates, irrespective of testing method. Our study highlights the importance of using detection methods optimized for the sample being tested.


2021 ◽  
Author(s):  
Md Samun Sarker ◽  
Iftekhar Ahmed ◽  
Shariful Islam ◽  
Ruhena Begum ◽  
Ayesha Ahmed ◽  
...  

Background The emergence of antimicrobial resistance (AMR) is growing public health concern around the world. When a number of studies have emphasized the Knowledge, Attitude and Practice (KAP) regarding antibiotic use and resistance in humans, little attention has been paid to the veterinary sector. The aim of this study was to understand the KAP towards antibiotic use and resistance among the veterinarians in Bangladesh. Methods A cross-sectional online based questionnaire survey was conducted from August to September 2020 among the registered veterinary practitioners. A self-administered Google form questionnaire consists of 46 questions on knowledge, attitude and practice regarding antibiotic use and their resistance. Results A total of 208 registered veterinarians participated in this study. 85.1% of the participants were male and 55% of the participants had a Masters degree. Around 50% of the veterinarians were poultry practitioners. All respondents were familiar with antimicrobials. 91.35% of the participants knew that antibiotics can not cure viral infections while 97.6% believed that frequent antibiotic prescription rendered them less effective. Participants claimed that only they are eligible to prescribe drugs for the treatment of animals. Of the total participants, 87.02% believed that a local antimicrobial guideline would be more effective than an international one while around 80% disagreed with adding antibiotics with feed/water as a growth promoter in livestock. However, gaps in practices were highlighted, suggesting training deficiencies. Conclusion The study for the first time conducted in Bangladesh dictates the future interventions like courses, workshops, and seminars on antibiotic usage and resistance are needed to ameliorate the awareness and change the behavior of veterinarians with regards to the rational use of antibiotics while also considering individual motivations and justifications for using antibiotics.


2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
Amir Alelign ◽  
Aboma Zewude ◽  
Beyene Petros ◽  
Gobena Ameni

Background. Tuberculosis (TB) has been an important public health concern in Ethiopia, particularly at areas of human-animal intersection. However, limited epidemiological information is available in this respect in the country. Therefore, the present study was conducted to investigate the transmission of TB at human-cattle interface, associated risk factors and public awareness about the disease at South Gondar Zone, northwest Ethiopia. Methods. A cross sectional study was conducted between March 2015 and April 2018 on 186 farmers and 476 cattle in South Gondar Zone, northwest Ethiopia. Bacteriological examination, region of difference (RD) 9-based polymerase chain reaction (PCR), single intradermal comparative tuberculin test (SICTT), and questionnaire were used for undertaking this study. Results. Culture positivity in farmers was 59.7% (111/186) and all the culture positive isolates were M. tuberculosis. About 68% (74/111) of culture positive respondents did not know about the transmission of TB from cattle to human or vice versa. The animal and herd prevalence of bovine TB were 1.5% (7/476) and 7.4% (7/95), respectively. Although the result was not statistically significant, the odds of bovine TB in cattle owned by TB positive households was slightly higher than those owned by TB free households (adjusted odds ratio, AOR = 1.39; 95% CI: 0.31–7.10; p=0.76). Conclusion. Although SIDCTT reactivity was slightly higher in cattle owned by TB positive households, all the human isolates were M. tuberculosis and no M. bovis was isolated from farmers, which could be due to the low prevalence of bovine TB in the area.


2011 ◽  
Vol 31 (3) ◽  
pp. 180-183 ◽  
Author(s):  
BG Joshi ◽  
K Keyal ◽  
R Pandey ◽  
BM Shrestha

Introduction: Enteric fever is a systemic infection caused by the bacteria, Salmonella enterica serovar Typhi (S.typhi) and Salmonella enterica serovara Paratyphi (S. paratyphi A, B and C). Most of the burden of the disease is limited to the developing world and the disease still has the issues like wide spectrum of clinical presentation and multidrug resistance. Objectives: This study was done to analyze the clinical profile and antibiotic sensitivity pattern in the cases of culture positive enteric fever. Methods: A prospective cross-sectional study was conducted in Civil Service Hospital from February 2010 to January 2011 in the paediatric population in the age group of 2 to 14 years. Children with Salmonella species isolated in blood culture were included in the study. Results: Out of the 40 children with culture positive enteric fever, male to female ratio was 1.3:1 with common age group between 11-14 years. S typhi was isolated in 25 cases while S. paratyphi in 15 cases. Clinical features of S. typhi and S. paratyphi were indistinguishable. Both S.typhi and S. paratyphi were found to be 100% sensitive to drugs like Ceftriaxone, Cefotaxime, Cefixime and Chloramphenicol. Sensitivity to Ofloxacin was 100% in S. paratyphi and 92% in S.typhi. Similarly sensitivity of Azithromycin was 92% and 93% for S.typhi and S. paratyphi respectively. Conclusion: Salmonella serotype is still 100 % sensitive to third generation cephalosporin. Some percentage of resistance is seen with Ofloxacin in S. typhi and with Azithromycin in both S.typhi and S. paratyphi. Key words: Enteric fever; S.typhi; S.paratyphi; Sensitivity DOI: http://dx.doi.org/10.3126/jnps.v31i3.4382 J Nep Paedtr Soc 2011;31(3): 180-183


2019 ◽  
Author(s):  
Amir Alelign ◽  
Aboma Zewude ◽  
Beyene Petros ◽  
Gobena Ameni

AbstractBackgroundTuberculosis (TB) has been an important public health concern in Ethiopia, particularly at areas of human-animal intersection. However, limited epidemiological information is available in this respect in the country. Therefore, the present study was conducted to investigate the transmission of TB at human-cattle interface, associated risk factors and public awareness about the disease at South Gondar Zone, northwest Ethiopia.MethodsA cross sectional study was conducted between March 2015 and April 2018 on 186 farmers and 476 cattle in South Gondar Zone, northwest Ethiopia. Bacteriological examination, region of difference (RD) 9 based polymerase chain reaction (PCR), single intradermal comparative tuberculin test (SIDCTT) and questionnaire were used for undertaking this study.ResultsCulture positivity in farmers was 59.7% (111/186) and all the culture positive isolates wereM. tuberculosis. About 68% (74/111) of culture positive respondents did not know about the transmission of TB from cattle to human or vice versa. The animal and herd prevalence of bovine TB were 1.5% (7/476) and 7.4% (7/95) respectively. The odd of bovine TB in cattle owned by TB positive households was slightly higher than those owned by TB free households (adjusted odds ratio, AOR=1.39; 95% CI: 0.31-7.10; p = 0.76).ConclusionAlthough SIDCTT reactivity was slightly higher in cattle owned by TB positive households, all the human isolates wereM. tuberculosisand noM. boviswas isolated from farmers, which could be due to the low prevalence of bovine TB in the area.


2020 ◽  
Author(s):  
Najwa Syahirah Roslan ◽  
Nurulfiza Mat Isa ◽  
Abdul Rahman Omar ◽  
Mohd. Hair Bejo ◽  
Aini Ideris

Abstract Background Salmonella enterica serovar Typhimurium persists as one of the most frequent food-borne zoonoses, causing a major public health concern worldwide. Furthermore, Salmonella infection has a large economic impact. Globally, the main sources of infection for humans include the consumption of contaminated poultry meat and eggs. In animals however, Salmonella transmission usually occurs horizontally from infected birds and contaminated environments. Hence, to delve further on how the impact of this disease can be lessened, an epidemiological study needs to be performed. It is vital to determine the genomic sequences of microorganisms to understand their biology and functional characterization. Thus, we determined the whole-genome sequence and virulence profile of S. enterica serovar Typhimurium strain UPM 260 isolated from Perak, Malaysia. Whole genome sequencing (WGS) using paired-end sequencing generated 107 contigs with a total genome size of 4.9 Mbp and 52% G+C content. The contigs were annotated for phylogenetic and functional analysis. Results Through the analysis, it is revealed that the genome were resistant to a number of antimicrobial drug classes including aminoglycoside, fluoroquinolone, tetracycline and phenicol. Also found in UPM 260 genome were three intact prophages (Fels-1, Gifsy-2 and one unique prophage, mEp390). The genome housed four types of restriction-modification systems (RMS) and Type I-E subtype of CRISPR-Cas system. Two metal resistance operons (mer and cop) and six pathogenicity islands (SPIs) were also discovered in UPM 260 genome. The SPIs contributed mostly to the bacterial virulence properties since 1054 CDS were reported to be homologous to the virulence factors in the database VFDB. Conclusion This study benefits us specifically in the field of genome engineering where gene-based genetic manipulations can be applied in reducing the prevalence and pathogenicity in Salmonella.


Crisis ◽  
2011 ◽  
Vol 32 (1) ◽  
pp. 43-51 ◽  
Author(s):  
Eugene Kinyanda ◽  
Ruth Kizza ◽  
Jonathan Levin ◽  
Sheila Ndyanabangi ◽  
Catherine Abbo

Background: Suicidal behavior in adolescence is a public health concern and has serious consequences for adolescents and their families. There is, however, a paucity of data on this subject from sub-Saharan Africa, hence the need for this study. Aims: A cross-sectional multistage survey to investigate adolescent suicidality among other things was undertaken in rural northeastern Uganda. Methods: A structured protocol administered by trained psychiatric nurses collected information on sociodemographics, mental disorders (DSM-IV criteria), and psychological and psychosocial risk factors for children aged 3–19 years (N = 1492). For the purposes of this paper, an analysis of a subsample of adolescents (aged 10–19 years; n = 897) was undertaken. Results: Lifetime suicidality in this study was 6.1% (95% CI, 4.6%–7.9%). Conclusions: Factors significantly associated with suicidality included mental disorder, the ecological factor district of residence, factors suggestive of low socioeconomic status, and disadvantaged childhood experiences.


Sign in / Sign up

Export Citation Format

Share Document