scholarly journals Emergence of blaTEM Type Extended-Spectrum β-Lactamase Producing Salmonella spp. in the Urban Area of Bangladesh

2014 ◽  
Vol 2014 ◽  
pp. 1-3 ◽  
Author(s):  
Dilruba Ahmed ◽  
Abu Iftiaf Md. Salah Ud-Din ◽  
Syeda Umme Habiba Wahid ◽  
Razib Mazumder ◽  
Kamrun Nahar ◽  
...  

Salmonellosis, an acute invasive enteric infection, is endemic in Bangladesh. We analyzed 128,312 stool samples of diarrheal patients to identify Salmonella spp. during 2005–2013. A total of 2120 (1.7%) Salmonella spp. were isolated and the prevalence of Salmonella spp. decreased significantly over time (2→1%, P<0.001). Among the typhoidal Salmonella (TS) serogroups, S. Typhi was predominant (404, [65.1%]) followed by S. Paratyphi B (139, [22.4%]) and S. Paratyphi A (78, [12.6%]). Of the nontyphoidal Salmonella (NTS) isolates, the serogroup C1 (560, [37%]) was predominant followed by B (379, [25%]), C2 (203, [14%]), E (127, [9%]), and D (94, [6%]). Most of the resistance was found towards nalidixic acid (40%), ampicillin (36%), cotrimoxazole (20%), chloramphenicol (13%), ciprofloxacin (4%), and ceftriaxone (4%). Interestingly, 32% of the isolates showed reduced susceptibility to Cip. Multiantibiotic resistance (MAR, ≥3 drugs) was more common among TS than NTS strains (P<0.001). Among the representative ceftriaxone-resistant isolates, blaTEM gene was detected among 88% (7/8) of the strains, whereas only one strain of S. Typhi was positive for both blaTEM and blaCTX-M genes. The study reflects higher prevalence of MAR Salmonella spp. and is the first to report the blaTEM gene mediated ESBL production among Salmonellae in Bangladesh. Emergence of MAR Salmonella spp. in particular ESBL strains should be considered a public health concern.

2019 ◽  
Vol 10 (2) ◽  
pp. 96-98 ◽  
Author(s):  
Mst Naznin Tarana ◽  
Samshad Jahan Shumu ◽  
Rashida Akter Khanam ◽  
Hosne Jahan ◽  
Soma Sarker ◽  
...  

Background: Typhoid fever remains a public health concern in developing countries. Antibiotic therapy constitutes the mainstay of management and multidrug resistant Salmonella spp has been emerged as a major public health concern. Objective: This study was done to evaluate antimicrobial sensitivity pattern of Salmonella typhi isolated from blood in Shaheed Suhrawardy Medical College Hospital. Methods: The retrospective study was done from January 2017 to December 2017 at microbiology laboratory, Shaheed Suhrawardy Medical College. A total of 367 samples, 30 isolates of Salmonella typhi obtained from blood culture. Both the indoor and outdoor patients were enrolled in this study. Results: During one year study period, total 367 cases were enrolled and the prevalence of Salmonella typhi was 30 (8.2 %). Among them (56.1%) were male with a male to female ratio 1.27:1. The bulk (50.1%) cases were in the age group of 15-30 years, 14.4% cases were in less than 15 years and 6.5% cases were in more than 60 years of age. Regarding antibiotic sensitivity pattern, 70% strains were sensitive to amikacin, 73.33% to azithromycin, 63.33% to ceftazidime, 66.66% to ceftriaxone, 86.66% to ciprofloxacin and 70% were nalidixic acid resistant Salmonella typhi. Conclusion: Ciprofloxacin may be used to treat typhoid fever cases and Ceftriaxone, azithromycin may be used as alternative drugs if they are found susceptible in culture and sensitivity testing. J Shaheed Suhrawardy Med Coll, December 2018, Vol.10(2); 96-98


2014 ◽  
Vol 77 (9) ◽  
pp. 1481-1486 ◽  
Author(s):  
MIGMA DORJI TAMANG ◽  
MAMATA GURUNG ◽  
HYANG-MI NAM ◽  
DONG CHAN MOON ◽  
GEUM-CHAN JANG ◽  
...  

This study compared the antimicrobial susceptibility and prevalence of virulence genes in Salmonella enterica Typhimurium isolated from healthy and diseased pigs in Korea. A total of 456 Salmonella Typhimurium isolated from healthy (n = 238) and diseased (n = 218) pigs between 1998 and 2011 were investigated. In total, 93.4% of the Salmonella Typhimurium isolates were resistant to at least one antimicrobial agent tested. The isolates were most often resistant to tetracycline (85.7%), followed by streptomycin (83.6%), nalidixic acid (67.3%), ampicillin (49.3%), chloramphenicol (42.8%), and gentamicin (37.1%). Moreover, multidrug resistance phenotype and resistance to ampicillin, florfenicol, gentamicin, nalidixic acid, neomycin, streptomycin, and tetracycline were significantly higher (P &lt; 0.01) among Salmonella Typhimurium isolates from the diseased pigs compared with those from the healthy pigs. The most common resistance pattern observed in both groups of isolates was streptomycin-tetracycline. Overall, more than 96% of the isolates tested possessed invA, spiA, msgA, sipB, prgH, spaN, tolC, lpfC, sifA, sitC, and sopB virulence genes. The prevalence of orgA, pagC, and iroN were 50.2, 74.1, and 91.0%, respectively, whereas isolates carrying cdtB (1.5%), pefA (7.0%), and spvB (14.9%) were identified much less frequently. Furthermore, the prevalence of invA, lpfC, orgA, pagC, and iroN was significantly higher (P &lt; 0.01) among the isolates from the diseased pigs than in isolates from the healthy pigs. Our results demonstrated that, among diseased pigs, there was significantly higher resistance to some antimicrobials and greater prevalence of some virulence genes than in healthy pigs, indicating the role these factors play in pathogenesis. Multidrug-resistant Salmonella isolates that carry virulence-associated genes are potentially more dangerous and constitute a public health concern. Thus, continuous surveillance of antimicrobial resistance and virulence characteristics in Salmonella is essential.


Author(s):  
Bethan Evans ◽  
Charlotte Cooper

Over the last twenty years or so, fatness, pathologised as overweight and obesity, has been a core public health concern around which has grown a lucrative international weight loss industry. Referred to as a ‘time bomb’ and ‘the terror within’, analogies of ‘war’ circulate around obesity, framing fatness as enemy.2 Religious imagery and cultural and moral ideologies inform medical, popular and policy language with the ‘sins’ of ‘gluttony’ and ‘sloth’, evoked to frame fat people as immoral at worst and unknowledgeable victims at best, and understandings of fatness intersect with gender, class, age, sexuality, disability and race to make some fat bodies more problematically fat than others. As Evans and Colls argue, drawing on Michel Foucault, a combination of medical and moral knowledges produces the powerful ‘obesity truths’ through which fatness is framed as universally abject and pathological. Dominant and medicalised discourses of fatness (as obesity) leave little room for alternative understandings.


2004 ◽  
Vol 8 (32) ◽  
Author(s):  

Resistance to antimicrobials has become a major public health concern, and it has been shown that there is a relationship, albeit complex, between antimicrobial resistance and consumption


Antibiotics ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 785
Author(s):  
Abubakar Siddique ◽  
Sara Azim ◽  
Amjad Ali ◽  
Saadia Andleeb ◽  
Aitezaz Ahsan ◽  
...  

Salmonellosis caused by non-typhoidal Salmonellaenterica from poultry products is a major public health concern worldwide. This study aimed at estimating the pathogenicity and antimicrobial resistance in S. enterica isolates obtained from poultry birds and their food products from different areas of Pakistan. In total, 95/370 (25.67%) samples from poultry droppings, organs, eggs, and meat were positive for Salmonella. The isolates were further identified through multiplex PCR (mPCR) as Salmonella Typhimurium 14 (14.7%), Salmonella Enteritidis 12 (12.6%), and other Salmonella spp. 69 (72.6%). The phenotypic virulence properties of 95 Salmonella isolates exhibited swimming and/or swarming motility 95 (100%), DNA degrading activity 93 (97.8%), hemolytic activity 92 (96.8%), lipase activity 87 (91.6%), and protease activity 86 (90.5%). The sopE virulence gene known for conferring zoonotic potential was detected in S. Typhimurium (92.8%), S. Enteritidis (100%), and other Salmonella spp. (69.5%). The isolates were further tested against 23 antibiotics (from 10 different antimicrobial groups) and were found resistant against fifteen to twenty-one antibiotics. All isolates showed multiple drug resistance and were found to exhibit a high multiple antibiotic-resistant (MAR) index of 0.62 to 0.91. The strong biofilm formation at 37 °C reflected their potential adherence to intestinal surfaces. There was a significant correlation between antimicrobial resistance and the biofilm formation potential of isolates. The resistance determinant genes found among the isolated strains were blaTEM-1 (59.3%), blaOxA-1 (18%), blaPSE-1 (9.5%), blaCMY-2 (43%), and ampC (8.3%). The detection of zoonotic potential MDR Salmonella in poultry and its associated food products carrying cephalosporin and quinolone resistance genes presents a major threat to the poultry industry and public health.


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