Multi-antibiotic resistance bacteria in landfill bioaerosols: Environmental conditions and biological risk assessment

2021 ◽  
pp. 118037
Author(s):  
Wendy B. Morgado-Gamero ◽  
Alexander Parody ◽  
Jhorma Medina ◽  
Laura A. Rodriguez-Villamizar ◽  
Dayana Agudelo-Castañeda
Work ◽  
2021 ◽  
pp. 1-11
Author(s):  
Carlos Carvalhais ◽  
Micaela Querido ◽  
Cristiana C. Pereira ◽  
Joana Santos

BACKGROUND: The COVID-19 global pandemic brought several challenges to occupational safety and health practice. One of these is the need to (re)assess the occupational risks, particularly, biological risks. OBJECTIVE: The purpose of this work is to promote guidance to occupational safety and health practitioners when conducting a biological risk assessment in this context. METHODS: The main steps of the biological risk assessment are explained with some inputs regarding the novelty posed by SARS-CoV-2 and an example of a qualitative risk assessment method is presented. Also, its application to two different activities was exemplified. RESULTS: In both cases, the assessment considered that vulnerable workers were working from home or in medical leave. The results showed low or medium risk level for the assessed tasks. For medium risk level, additional controls are advised, such maintain social distancing, sanitize instruments/equipment before use, use proper and well-maintained PPE (when applicable), and promote awareness sessions to spread good practices at work. Employers must be aware of their obligations regarding biological risk assessment and OSH practitioners must be prepared to screen and link the abundance of scientific evidence generated following the outbreak, with the technical practice. CONCLUSIONS: This paper could be an important contribution to OSH practice since it highlights the need to (re)assess occupational risks, especially biological risk, to ensure a safe return to work, providing technical guidance.


Genetika ◽  
2008 ◽  
Vol 40 (2) ◽  
pp. 179-190 ◽  
Author(s):  
Dragana Josic ◽  
Bogic Milicic ◽  
Snezana Mladenovic-Drinic ◽  
Mirjana Jarak

Rhizobium leguminosarum bv. trifolii is microsymbiont Trifolium pratense and Trifolium repens, which are very important legumes in Serbia. The natural nodulating population of those bacteria was collected and estimated biodiversity distribution by monitoring dominant genotypes of these bacteria. The population of Rhizobium leguminosarum bv. trifolii were collected from 50 marked locations of 11 types of soil in Serbia. 437 natural isolates, rescued from nodules of Trifolium repens or Trifolium pratense, were analyzed by phenotypic approach. We obtained 156 different isolates on the basis of differences in their IAR - intrinsic antibiotic resistance (five antibiotics) and HMT- heavy methal tolerance (five heavy metals). We investigated 56 dominant isolates with more than three differences in IAR-HMT patterns by REP-PCR and RAPD fingerprinting (AP10 and SPH 1 primers). The results showed genodiversity of dominant Rhizobium leguminosarum bv. trifolii field isolates and offered the possibility to assess their changes on marked locations during time and under different environmental conditions and geographical distribution.


Author(s):  
AlirezaKamali Asl ◽  
MohammadMahdi Mojarrad Kahani ◽  
Samaneh Hashemi ◽  
MasoudMojarrad Kahani ◽  
Mostafa Amini

2005 ◽  
Vol 10 (1) ◽  
pp. 10-29 ◽  
Author(s):  
Danielle Caucheteux ◽  
Pierre Mathot

Author(s):  
G. G. Onishchenko ◽  
V. V. Kutyrev ◽  
G. N. Odinokov ◽  
V. A. Safronov

New area of biological studies that goes under general name of “synthetic biology” is a next step in the development of gene engineering associated with design and construction of unique biological systems with “preset” functions and properties, having no natural analogues. Nowadays synthetic biology is a source of innovations that offer solution to a number of global problems facing the humanity, including production of artificial genome-based multi-diagnostic panels, medicinal preparations, synthetic vaccine, etc. The process of unnatural life form creation requires conduction of monitoring both on the international and national scales using advanced system of biological risk assessment.


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