scholarly journals COVID-19 Implications of the Physical Interaction of Artificial Fog on Respiratory Aerosols

2021 ◽  
Author(s):  
Matthew Loss ◽  
Mark Katchen ◽  
Ilan Arvelo ◽  
Phil Arnold ◽  
Mona Shum
Keyword(s):  
Control Measure ◽  
Control Treatment ◽  
Physical Interaction ◽  
Air Samples ◽  
Log Reduction ◽  
The Difference ◽  
Specific Sense ◽  
Additional Reduction ◽  
Closed Environment ◽  
Over Time

Introduction Artificial fog is used in the film, television, and live entertainment industries to enhance lighting, as a visual effect, and to create a specific sense of mood or atmosphere. This study investigated whether the suspension time of respiratory aerosols spiked with tagged DNA tracers would change in the presence of glycerin- or glycol-containing artificial fogs. Methods & Materials Respiratory aerosols with tagged DNA tracers were sprayed into a closed environment without and with glycerin- or glycol-containing artificial fog, with air samples taken at regular intervals to determine the decay of tagged DNA tracer over time. The study treatments included Control (no fog), Glycerin Low (3 mg/m3), Glycerin High (~15 mg/m3), Glycol Low (~5 mg/m3), and Glycol High (~40 mg/m3). Results All artificial fog treatments had lower mean log reduction curves compared to the Control treatment. Compared to the Control and Glycerin Low treatments, the differences in mean log reduction for nearly all other artificial fog treatments were statistically significant (p<0.001); the difference between Control and Glycerin Low treatments was not statistically significant (p=0.087). The differences in mean log reduction between treatments using the same artificial fog type were not statistically significant. Conclusion Artificial fog use does not increase suspension time of respiratory aerosols, and therefore does not appear to increase the risk of airborne transmission of diseases from respiratory aerosols, such as COVID-19. Of the two types of artificial fogs investigated, that containing glycol decreased suspension time more than that containing glycerin. In practice, the additional reduction in suspension time provided by the physical interaction of respiratory aerosols with artificial fog does not suggest any practical benefit for using artificial fog as a control measure.

Effect of a Reactive Oxygen Species–Generating System for Control of Airborne Microorganisms in a Meat-Processing Environment†

2008 ◽  
Vol 71 (9) ◽  
pp. 1922-1925 ◽  
Author(s):  
J. R. PATEL ◽  
X. NOU
Keyword(s):  
Reactive Oxygen Species ◽  
Lactic Acid ◽  
Lactic Acid Bacteria ◽  
Reactive Oxygen ◽  
Control Treatment ◽  
Oxygen Species ◽  
Meat Processing ◽  
Log Reduction ◽  
Air Sampler ◽  
The Difference

The effectiveness of reactive oxygen species (ROS)–generating AirOcare equipment on the reduction of airborne bacteria in a meat-processing environment was determined. Serratia marcescens and lactic acid bacteria (Lactococcus lactis subsp. lactis and Lactobacillus plantarum) were used to artificially contaminate the air via a six-jet Collison nebulizer. Air in the meat-processing room was sampled immediately after aerosol generation and at various predetermined times at multiple locations by using a Staplex 6 stage air sampler. Approximately a 4-log reduction of the aerial S. marcescens population was observed within 2 h of treatment (P &lt; 0.05) compared to a 1-log reduction in control samples. The S. marcescens populations reduced further by ~4.5 log after 24 h of exposure to ROS treatment. Approximately 3-log CFU/m3 reductions in lactic acid bacteria were observed following 2-h ROS exposure. Further ROS exposure reduced lactic acid bacteria in the air; however, the difference in their survival after 24 h of exposure was not significantly different from that observed with the control treatment. S. marcescens bacteria were more sensitive to ROS treatment than the lactic acid bacteria. These findings reveal that ROS treatment using the AirOcare unit significantly reduces airborne S. marcescens and lactic acid bacteria in meat-processing environments within 2 h.

The Distinction between [P] and [S]

2017 ◽  
Author(s):  
Galen Strawson
Keyword(s):  
Personal Identity ◽  
Radical Change ◽  
Legal Responsibility ◽  
The Difference ◽  
Definition Of ◽  
Over Time

This chapter examines the difference between John Locke's definition of a person [P], considered as a kind of thing, and his definition of a subject of experience of a certain sophisticated sort [S]. It first discusses the equation [P] = [S], where [S] is assumed to be a continuing thing that is able to survive radical change of substantial realization, as well as Locke's position about consciousness in relation to [P]'s identity or existence over time as [S]. It argues that Locke is not guilty of circularity because he is not proposing consciousness as the determinant of [S]'s identity over time, but only of [S]'s moral and legal responsibility over time. Finally, it suggests that the terms “Person” and “Personal identity” pull apart, in Locke's scheme of things, but in a perfectly coherent way.

ANALISIS KOMPARATIF TUTURAN BAHASA INDONESIA PADA MAHASISWA UNIVERSITAS IQRA BURU

2020 ◽  
Author(s):  
HARZIKO
Keyword(s):  
Historical Development ◽  
Qualitative Approach ◽  
Data Selection ◽  
Communication Tool ◽  
Comparative Linguistics ◽  
Data Presentation ◽  
Vocal System ◽  
The Difference ◽  
Bahasa Indonesia ◽  
Over Time

Language is a tool used to convey ideas, ideas, feelings, and thoughts to others. Language, which is an arbiter sound symbol system that is used by members of one community to work together, interact, and identify themselves. In other words, language can be a means to convey intent or purpose so that the desired thing is achieved. As a communication tool, language develops over time. Therefore, language will never die if its speakers still care and love for the language comparative linguistics as a study or study of language which includes the comparison of cognate languages or the historical development of a language. This research aims to elucidate the use of Indonesian language at students of Iqra Buru University with Comparative Analysis. The method used in this research is descriptive with a qualitative approach. Data collected by observation, interview, and documentation techniques. Sources of data in this study were 5 speakers 5 speakers language Analyzing the data by means of data selection, data classification, and data presentation. The results of the study stated that there were phonological differences, namely the Jamee vowel system contained / ɛ / and / ɔ /, while the vocal system was / a / and the consonant system was Jamee / ɣ / or / R /, while the language / r /, then the difference pronunciations include single vowels, for example makɛn, bɔRa in Jamee and eating, bara in Language used by iqra Rush university students. Keywords

scholarly journals Use of masks in public places in Poland during SARS-Cov-2 epidemic: a covert observational study

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Maria Ganczak ◽  
Oskar Pasek ◽  
Łukasz Duda – Duma ◽  
Dawid Świstara ◽  
Marcin Korzeń
Keyword(s):  
Health Promotion ◽  
Observational Study ◽  
Control Measure ◽  
Communication Channels ◽  
Public Spaces ◽  
Personal Health ◽  
Closed Space ◽  
Public Places ◽  
Health Control ◽  
Over Time

Abstract Background Face masks have been employed in the COVID-19 pandemic plans as a public and personal health control measure against the spread of SARS-CoV-2. In Poland, obligatory wearing of masks in public spaces was introduced on April 10th, 2020; a relaxation of previous universal measures was announced on May 29th, 2020, limiting use to indoor public places. Objective To assess use of masks or other protective devices in public spaces in Poland during the SARS-Cov-2 epidemic. Methods A non-participatory covert observational study was conducted on three dates, (10.05/18.05/25.05.2020) at public spaces in 13 regions with different risks. Ten consecutive individuals were observed by each of 82 medical students (n = 2460 observations), using a structured checklist. Results Among 2353 observed persons, the female/male ratios were 1.0, 1.1, and 1.0 on the three dates. Almost three quarters - 73.6% (n = 552/750) were using masks on date 1, 66.5% (544/818) on date 2; and 65.7% (516/785) on date 3. Cloth masks predominated on all dates (64.7–62.3%-62.6%), followed by medical (23.4–28.5%-26.9%). Being female (OR = 1.77–1.47-1.53 respectively) and location in a closed space (OR = 2.60–2.59-2.32) were each associated with higher usage. Participants in sports were about two times less likely to use masks (OR = 0.64–0.53-0.53) as compared to other activities. The proportion using masks correctly decreased gradually over time (364/552; 65.9%; 339/544; 62.3% and 304/516; 58.9%). More females wore masks correctly (date 1: 205/294; 69.7% vs 159/258; 61.6%, and date 3: 186/284; 65.5% vs 118/232; 50.9%; p = 0.045; p = 0.0008 respectively). Uncovered noses (47.3–52.7%) and masks around the neck (39.2–42.6%) were the most frequent incorrect practices. Conclusions Practices were not in line with official recommendations, especially among males, and deteriorated over time. Cloth masks were predominantly used in public spaces. Health promotion, through utilizing all available communication channels, would be helpful to increase compliance.

scholarly journals Herd-Level and Individual Differences in Fecal Lactobacilli Dynamics of Growing Pigs

Animals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 113
Author(s):  
Emilia König ◽  
Virpi Sali ◽  
Paulina Heponiemi ◽  
Seppo Salminen ◽  
Anna Valros ◽  
...  
Keyword(s):  
Species Diversity ◽  
Growing Pigs ◽  
General Management ◽  
Immune Parameters ◽  
Sampling Points ◽  
Sequencing Technique ◽  
Piglet Serum ◽  
The Difference ◽  
Over Time ◽  
Fecal Sampling

We studied the fecal lactobacilli count and species diversity of growing pigs along with immune parameters associated with intestinal lactobacilli. Thirty pigs categorized as small (S, n = 12) or large (L, n = 18) at birth were followed from birth to slaughter in two commercial herds, H1 and H2. Herds differed in terms of their general management. We determined sow colostrum quality, colostrum intake, piglet serum immunoglobulins, and pig growth. We took individual fecal samples from pigs in the weaning and finishing units. We studied lactobacilli count and identified their diversity with 16S PCR. Total lactobacilli count increased in H1 and decreased in H2 between samplings. Lactobacilli species diversity was higher in H1 in both fecal sampling points, whereas diversity decreased over time in both herds. We identified altogether seven lactobacilli species with a maximum of five (one to five) species in one herd. However, a relatively large proportion of lactobacilli remained unidentified with the used sequencing technique. Small pigs had higher lactobacilli counts in both herds but the difference was significant only in H2 (p = 0.01). Colostrum quality was numerically better in H1 than in H2, where colostrum intake tended to be associated with total lactobacilli count (p = 0.05).

scholarly journals 152. Applying A Difference-in-Difference Analysis to Assess Effect of Antimicrobial Stewardship Strategies on Changes in Antimicrobial Use

2020 ◽  
Vol 7 (Supplement_1) ◽  
pp. S86-S86
Author(s):  
Ann F Chou ◽  
Yue Zhang ◽  
Makoto M Jones ◽  
Christopher J Graber ◽  
Matthew B Goetz ◽  
...  
Keyword(s):  
Antimicrobial Stewardship ◽  
Clinical Pharmacist ◽  
Antibiotic Use ◽  
Feedback Mechanism ◽  
Health Care Facilities ◽  
Antimicrobial Use ◽  
Time Points ◽  
The Difference ◽  
The Impact ◽  
Over Time

Abstract Background About 30–50% of inpatient antimicrobial therapy is sub-optimal. Health care facilities have utilized various antimicrobial stewardship (AS) strategies to optimize appropriate antimicrobial use, improve health outcomes, and promote patient safety. However, little evidence exists to assess relationships between AS strategies and antimicrobial use. This study examined the impact of changes in AS strategies on antimicrobial use over time. Methods This study used data from the Veterans Affairs (VA) Healthcare Analysis & Informatics Group (HAIG) AS survey, administered at 130 VA facilities in 2012 and 2015, and antimicrobial utilization from VA Corporate Data Warehouse. Four AS strategies were examined: having an AS team, feedback mechanism on antimicrobial use, infectious diseases (ID) attending physicians, and clinical pharmacist on wards. Change in AS strategies were computed by taking the difference in the presence of a given strategy in a facility between 2012–2015. The outcome was the difference between antimicrobial use per 1000 patient days in 2012–2013 and 2015–2016. Employing multiple regression analysis, changes in antimicrobial use was estimated as a function of changes in AS strategies, controlling for ID human resources in and organizational complexity. Results Of the 4 strategies, only change in availability of AS teams had an impact on antimicrobial use. Compared to facilities with no AS teams at both time points, antibiotic use decreased by 63.9 uses per 1000 patient days in facilities that did not have a AS team in 2012 but implemented one in 2015 (p=0.0183). Facilities that had an AS team at both time points decreased use by 62.2 per 1000 patient days (p=0.0324). Conclusion The findings showed that AS teams reduced inpatient antibiotic use over time. While changes in having feedback on antimicrobial use and clinical pharmacist on wards showed reduced antimicrobial use between 2012–2015, the differences were not statistically significant. These strategies may already be a part of a comprehensive AS program and employed by AS teams. In further development of stewardship programs within healthcare organizations, the association between AS teams and antibiotic use should inform program design and implementation. Disclosures All Authors: No reported disclosures

scholarly journals 244 Algae taste preference of Chlorella sp. from dairy wastewater by weaned dairy calves

2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 15-15
Author(s):  
Bradley J Heins ◽  
Siane C Luzzi ◽  
Robert D Gardner
Keyword(s):  
Dry Matter ◽  
Taste Preference ◽  
Dairy Wastewater ◽  
Control Treatment ◽  
Central Research ◽  
Solar Panels ◽  
University Of Minnesota ◽  
Chlorella Sp ◽  
Coefficient Of Concordance ◽  
The Difference

Abstract The objective of this study was to evaluate the taste preference of calves fed Chlorella sp. microalgae produced from dairy lagoon wastewater. The study was conducted at the University of Minnesota West Central Research and Outreach Center, Morris, MN, dairy during May 2019. Six Holstein and crossbred dairy heifer calves were fed 0 (control), 30, and 60 g of Chlorella sp. daily in a sequential elimination study. For the 7-d experiment, day 1 to 2 were for diet adaptation and day 3 to 4 were for data collection. During the final 3 days, the primarily consumed treatment was removed to determine the second preferred treatment. The microalgae used in this study was isolated from the dairy wastewater lagoon. The microalgae biomass was produced using outdoor hanging bag bioreactors with Chlorella sp. to recycle the dairy wastewater. The biomass was sterilized and kept frozen at -4°C until fed to calves. Calves were housed individually in hutches with outdoor access under solar panels, with free-choice water. Kendall’s coefficient of concordance was calculated to rank the consumption of the treatments from most to least preferred using JMP 14.3 statistical software. Pairwise comparisons and Tukey adjustment were applied to evaluate the difference between the treatments for total intake. Calves consumed more (P &lt; 0.05) dry matter from control grain (3.4 kg/d) compared to 30 g microalgae grain (2.42 kg/d) and 60 g microalgae grain (1.56 kg/d) during the first 2-d period. During the second 2-d (d 3 and 4) segment, dry matter intake was reduced (P &lt; 0.05) for the 60 g microalgae treatment compared to the control and 30 g microalgae treatment. Five of six calves in this study always ranked the control treatment first (P &lt; 0.05) when given a choice, and ranked the 30 g microalgae second choice. Results indicated that microalgae maybe added to calf starter grains without any adverse effects; however, calves preferred calf starter grains without microalgae.

FC 068QUALITY OF LIFE OVER TIME IN OLDER MEN AND WOMEN WITH ADVANCED CKD - RESULTS FROM THE EQUAL STUDY

2021 ◽  
Vol 36 (Supplement_1) ◽  
Author(s):  
Nicholas Chesnaye ◽  
Yvette Meuleman ◽  
Esther De Rooij ◽  
Friedo W Dekker ◽  
Marie Evans ◽  
...  
Keyword(s):  
Harmful Effect ◽  
Patient Characteristics ◽  
P Value ◽  
Joint Models ◽  
Cross Sectional ◽  
Linear Interaction ◽  
Men And Women ◽  
Negative Effect ◽  
The Difference ◽  
Over Time

Abstract Background and Aims Differences between the sexes are apparent in the epidemiology of CKD. Cross-sectional studies show that women consistently report a poorer health-related quality of life (QoL) than men, however, longitudinal studies are lacking. Here we investigate the sex-specific evolution of QoL over time in advanced CKD. As a secondary aim, we explore the sex-specific determinants of QoL. Method EQUAL is an observational prospective cohort study in stages 4 and 5 CKD patients ≥65 years not on dialysis with an incident estimated glomerular filtration rate (eGFR) &lt; 20 ml/min/1.73m². Data on QoL (measured using the RAND-36), clinical and demographic patient characteristics were collected between April 2012 and September 2020. QoL trajectories were modelled by sex using linear mixed models, and joint models were applied to deal with informative censoring. We followed patients until death or dialysis initiation. Results We included 5151 QoL measurements in 1416 patients over a total of 1986 person years of follow-up. Overall, the physical component summary (PCS) declined with 2.0 (95% CI 1.4-2.6) points and the mental component summary (MCS) by 2.4 (95% CI 1.8-3.0) points per year. Although women had overall lower QoL scores, figure 1 demonstrates that PCS and MCS declined more than twice as fast in men (PCS: 2.4 per year, 95% CI 1.7 – 3.1, MCS: 2.9 per year, 95% CI 2.2 – 3.6) compared with women (PCS: 1.1 per year, 95% CI -0.2 – 2.0, MCS: 1.5 per year, 95% CI 0.5 – 2.4). We identified a non-linear interaction effect between sex and eGFR levels on QoL, demonstrating a stronger negative effect of decreased eGFR on both PCS (p=0.02) and MCS (p=0.04) in men compared with women. Subsequent adjustment for renal decline attenuated the difference in rate of QoL decline between men and women (difference after adjustment; PCS: 1.1, 95% CI -0.1 – 2.2, MCS: 1.2, 95% 0.0 – 2.3). In univariable analyses, higher serum haemoglobin was more beneficial to QoL in men compared to women (p-value for interaction; PCS: p=0.03, MCS: p=0.01). Higher serum phosphate had a strong harmful effect on both PCS and MCS in men, but not in women (PCS & MCS: p&lt;0.001). The presence of pre-existing diabetes had a negative effect on PCS and MCS in men, but to a lesser extent in women (PCS: p=0.02, MCS: p=0.01). Conclusion Despite the higher overall QoL reported by men, both their physical and mental QoL declined approximately twice as fast compared with women. The faster decline in men was mediated in part by their lower levels of renal function, which had a stronger impact on their QoL as compared with women. Furthermore, in exploratory analyses we identified that high levels of phosphate, low levels of haemoglobin, and pre-existing diabetes were more detrimental to QoL in men than in women.

scholarly journals FÓSFORO NA SOLUÇÃO DO SOLO EM RESPOSTA À APLICAÇÃO DE FERTILIZANTES FLUIDOS MINERAL E ORGANOMINERAL

Irriga ◽  
2015 ◽  
Vol 1 (1) ◽  
pp. 14-27 ◽  
Author(s):  
Dirceu Maximino Fernandes ◽  
Marco André Grohskopf ◽  
Edilson Ramos Gomes ◽  
Natália Rodrigues Ferreira ◽  
Leonardo Teodoro Bull
Keyword(s):  
Electrical Conductivity ◽  
Soil Solution ◽  
Phosphorus Content ◽  
Swine Manure ◽  
Mineral Fertilizer ◽  
Control Treatment ◽  
Shoot Biomass ◽  
Phosphorus Fertilization ◽  
E Mail ◽  
Over Time

FÓSFORO NA SOLUÇÃO DO SOLO EM RESPOSTA À APLICAÇÃO DE FERTILIZANTES FLUIDOS MINERAL E ORGANOMINERAL  DIRCEU MAXIMINO FERNANDES1; MARCO ANDRÉ GROHSKOPF2; EDILSON RAMOS GOMES3; NATÁLIA RODRIGUES FERREIRA2 E LEONARDO TEODORO BÜLL1 1Professor do Programa de Pós-Graduação em Agronomia, – Universidade Estadual Paulista “Júlio Mesquita Filho”, Faculdade de Ciências Agronômicas (UNESP/FCA) - Rua José Barbosa de Barros, no 1780, CEP: 18160-307 - Botucatu, SP, bolsista de produtividade em pesquisa do CNPq. E-mail: [email protected]; [email protected] do Programa de Pós-Graduação em Agronomia (Agricultura) – UNESP/FCA, bolsista CAPES. E-mail: [email protected]; [email protected] do Programa de Pós-Graduação em Agronomia (Irrigação e Drenagem) – UNESP/FCA, bolsista CNPq. E-mail: [email protected].  1 RESUMO Pouco se conhece sobre a dinâmica da solução do solo em resposta a aplicação de diferentes fertilizantes no solo, principalmente, em relação à adubação fosfatada. Nesse sentido, avaliou-se o teor de fósforo, pH e condutividade elétrica na solução do solo e, a produção de biomassa de parte aérea de plantas em resposta a aplicação de fertilizantes fluidos mineral e organomineral a base de dejeto suíno e, mineral sólido. Os tratamentos foram: testemunha geral caracterizada pela ausência de nutrientes, testemunha de fósforo (P) caracterizada pela ausência apenas de P, fertilizantes fluido mineral (MF-P) e organomineral (OF-P) e, sólido (MS-P) aplicados em Latossolo Vermelho distroférrico (LV) e Neossolo Quartzarênico Órtico típico (NQ). O experimento foi conduzido em vasos em casa de vegetação em delineamento experimental de blocos casualizados com quatro repetições. A solução do solo foi captada através de extratores de solução instalados nos vasos, realizando-se dez coletas no período de 137 dias após a aplicação dos fertilizantes, abrangendo dois cultivos consecutivos de aveia preta (cultivo I e cultivo II). Em ambos os solos o rendimento de matéria seca no cultivo I foi maior no OF-P e no cultivo II semelhante no MS-P, MF-P e OF-P, sendo os maiores rendimentos demonstrados no LV em relação ao NQ. Os teores de P na solução do solo variaram ao longo do tempo apenas no OF-P no LV, enquanto que no NQ houve variação em todos os tratamentos, sendo em ambos os solos os maiores teores a partir do cultivo II.  Para os valores de pH e condutividade elétrica (CE) também houve variação ao longo do tempo em ambos os solos, sendo que no pH os valores aumentaram e na CE os valores diminuíram no cultivo II em relação ao cultivo I em todos os tratamentos. Palavras-chave: adubo líquido e sólido, resíduo, esterco.   FERNADES, D. M.; GROHSKOPF, M. A.; GOMES, E. R.; FERREIRA, N. R.; BÜLL, L.T.PHOSPHORUS IN SOIL SOLUTION IN RESPONSE TO THE APPLICATION OF MINERAL AND ORGANOMINERAL FLUID FERTILIZERS  2 ABSTRACT Little is known about the dynamics of soil solution in  response to  the application of different soil fertilizers, mainly in relation to phosphorus fertilization.  Using this approach, the study evaluated phosphorus content, pH and electrical conductivity in soil solution as well as shoot biomass production in response to mineral and organomineral fluid fertilizers containing swine manure and solid mineral.  Treatments were as follows: a control treatment consisting of absence of nutrients, phosphorus (P) control characterized by absence   only of  P, mineral (MF-P) and organomineral (OF-P) fluid fertilizers , and solid mineral fertilizer (SM-P) applied to Oxisol   (LVd) and Typic Quartzipsamments  (TQ) soils. The experiment was carried out   using pots in a greenhouse with a randomized block  experimental design  and  four replicates. Soil solution was collected by solution extractors installed in pots. Ten collections were performed over 137 days after fertilizer application, which included two crops in a row of black oat (cultivation I and cultivation II). In both soils, yield of dry matter in cultivation I was higher in OF-P, and  it was similar in  (SM-P), (MF-P) and (OF-P) in cultivation II. Higher yield was obtained in LVd in relation to TQ.  Phosphorus content in soil solution ranged over time just in OF-P in LVd, whereas  variation was observed in all treatments in TQ. In both soils, higher content was observed as of cultivation II.   Also, variation over time was observed for pH and electrical conductivity (EC) values in both soils. Values of pH increased and values of EC decreased in cultivation II as compared with those in cultivation I in all treatments. Keywords: liquid and solid fertilizer, residue, manure.

scholarly journals Evaluation of Apparent Microflora and Study of Antibiotic Resistance of Coliforms Isolated from the Shells of Poultry Eggs in Moscow-Russia

2020 ◽  
pp. 70-77
Author(s):  
Mbarga Manga Joseph Arsene ◽  
Smolyakova Larisa Andreevna ◽  
Podoprigora Irina Viktorovna
Keyword(s):  
Antibiotic Resistance ◽  
Veterinary Medicine ◽  
Coliform Bacteria ◽  
Poultry Eggs ◽  
Mar Index ◽  
The Difference ◽  
Chicken Eggs ◽  
The City ◽  
Over Time ◽  
Poultry Farming

Background: Antibiotic resistance is increasingly an issue in both human health and veterinary medicine. It is important to regularly assess the resistance of strains which have high potential to transmit this resistance. Numerous researches have shown so far that coli forms are part of these bacteria and coliforms from breeding environments (in particular poultry farming) are the most concerned because of their permanent exposure to antibiotics and adaptation that could result. Aim: This work was carried out to investigate the sensitivity to antibiotics of coliforms isolated from the shell of poultry eggs. Methods: A total of 191 egg samples (149 chicken eggs and 42 quail eggs) were collected in supermarket of the city of Moscow, coliforms bacteria were isolated the shells of these eggs and their sensitivity to antibiotics was achieved by employing modified Kirby-Bauer’s disc method. The results have been analysed and interpreted using the Guidelines of Ministry of health of Russian Federation. Results and Discussion: It turns out that, among the 191 samples studied only 16.2% (31) of the chicken eggs contained coli forms, 7.3% (14) contained mold and 76.4% (146) were sterile while 81% (34) of quail eggs were sterile, 19% (8) contained mold and none contained coliforms. Of the 60 bacteria isolated, 39 (65%) were resistant to at least one antibiotic and the highest MAR Index observed was 0.58 while the lowest was 0.08. Of the 720 anti biograms performed, we observed 557 (77.4%) cases of sensitivity, 72 (10.0%) intermediate cases and 91 (12.6%) cases of resistance. The highest resistances were observed on tetracycline (50%), amoxycillin (40%) and ampicillin (30%) while the weakest resistances were observed on trimethoprim (11.7%), cefazolin (10%), ciprofloxacin (5%) and 1.7% for ceftriazone, fosfomycin and nitrofurantoin. A comparison between the sensitivity of the isolates to Cefazolin and their sensitivity to Cefazolin + Clavulanic acid showed that the difference between these two antibiotics was highly significant (P = 0.00). Conclusion: Antibiotic resistance of coliform bacteria isolated was high, with the highest MAR Index observed equal to 0.58. The bio security relating to the use of antibiotics must be reinforced, better use of current known antibiotics is necessary to prolong their effectiveness over time.

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