Monitoring the marine environment for small round structured viruses (SRSVS): a new approach to combating the transmission of these viruses by molluscan shellfish

1998 ◽  
Vol 38 (12) ◽  
pp. 51-56 ◽  
Author(s):  
K. Henshilwood ◽  
J. Green ◽  
D. N. Lees

This study investigates human enteric virus contamination of a shellfish harvesting area. Samples were analysed over a 14-month period for Small Round Structured Viruses (SRSVs) using a previously developed nested RT-PCR. A clear seasonal difference was observed with the largest numbers of positive samples obtained during the winter period (October to March). This data concurs with the known winter association of gastroenteric illness due to oyster consumption in the UK and also with the majority of the outbreaks associated with shellfish harvested from this area during the study period. RT-PCR positive amplicons were further characterised by cloning and sequencing. Sequence analysis of the positive samples identified eleven SRSV strains, of both Genogroup I and Genogroup II, occurring throughout the study period. Many shellfish samples contained a mixture of strains with a few samples containing up to three different strains with both Genogroups represented. The observed common occurrence of strain mixtures may have implications for the role of shellfish as a vector for dissemination of SRSV strains. These results show that nested RT-PCR can identify SRSV contamination in shellfish harvesting areas. Virus monitoring of shellfish harvesting areas by specialist laboratories using RT-PCR is a possible approach to combating the transmission of SRSVs by molluscan shellfish and could potentially offer significantly enhanced levels of public health protection.

2021 ◽  
Author(s):  
Uday Chatterjee ◽  
Ajay Chakraborty ◽  
Sishir Naskar ◽  
Bibhuti Saha ◽  
Bhaswati Bandyapadhyay ◽  
...  

Abstract Background: Role of microaspiration of mucus mixed with SARS-CoV-2 (severe acute respiratory syndrome corona virus 2) causing pneumonia is lacking in searched literature. Recently some authors have emphasized on microaspiration. SARS-CoV-2 primarily replicates in nasal mucosa and sheds in nasal mucus which travels down as microaspiration and causes pneumonia. We aimed to evaluate the efficacy of normal saline nasal spray and gargle (NSNSG) to wash off SARS-CoV-2 from nasal and pharyngeal mucosa to prevent microaspiration and pneumonia. Methods: From RT-PCR (reverse transcriptase polymerase chain reaction) report, we selected 62 patients for study group and 63 patients for control, having higher virion load i.e. cycle threshold (Ct) value 25 or less. Patients in study group were trained with NSNSG. We reviewed HRCT (high resolution computed tomogram) of lung in 56 patients of both groups for severity score (SS) in lung and was compared with initial HRCTResults: Thirty out of 62 (48%) of study group significantly (p=0·01) became RT-PCR negative following NSNSG compared to 16 out of 63 patients (25%) of control. Thirty one out of 34 patients (91%) of study group either improved or inhibited progression of SS in lung HRCT. In control group, 14 out of 22 patients (63%) also showed favourable findings. Nevertheless, study group significantly improved (p=0·028) in SS.Conclusions: NSNSG is significantly efficacious to wash off SARS-CoV-2 from nasal cavity and pharynx, and to break supply chain of SARS-CoV-2 from source to prevent microaspiration in lung alveoli and pneumonia. From that phenomenon we infer that SARS-CoV-2 as a ‘surface virus’ and it seems that vaccine resistant SARS-CoV-2 and different strains of SARS-CoV-2 would be washed off with NSNSG.


2018 ◽  
Vol 68 (672) ◽  
pp. e478-e486 ◽  
Author(s):  
Heather Dawn Brant ◽  
Helen Atherton ◽  
Annemieke Bikker ◽  
Tania Porqueddu ◽  
Chris Salisbury ◽  
...  

BackgroundThe receptionist is pivotal to the smooth running of general practice in the UK, communicating with patients and booking appointments.AimThe authors aimed to explore the role of the receptionist in the implementation of new approaches to consultations in primary care.Design and settingThe authors conducted a team-based focused ethnography. Three researchers observed eight general practices across England and Scotland between June 2015 and May 2016.MethodInterviews were conducted with 39 patients and 45 staff in the practices, all of which had adopted one or more methods (telephone, email, e-consultation, or internet video) for providing an alternative to face-to-face consultation.ResultsReceptionists have a key role in facilitating patient awareness regarding new approaches to consultations in primary care, while at the same time ensuring that patients receive a consultation appropriate to their needs. In this study, receptionists’ involvement in implementation and planning for the introduction of alternative approaches to face-to-face consultations was minimal, despite the expectation that they would be involved in delivery.ConclusionA shared understanding within practices of the potential difficulties and extra work that might ensue for reception staff was lacking. This might contribute to the low uptake by patients of potentially important innovations in service delivery. Involvement of the wider practice team in planning and piloting changes, supporting team members through service reconfiguration, and providing an opportunity to discuss and contribute to modifications of any new system would ensure that reception staff are suitably prepared to support the introduction of a new approach to consultations.


2011 ◽  
Vol 58 (3) ◽  
pp. 407-423 ◽  
Author(s):  
David Slattery ◽  
Joseph Nellis

Following the global financial crisis, many countries have embarked on fundamental reviews of their regulatory systems in an attempt to identify the causes of the near collapse in financial systems and to pave the way for a new approach to regulation. The focus of this paper concerns the intellectual assumptions on which previous regulatory approaches have largely been built, both in the UK and in a number of other countries. We examine the analysis provided by the UK?s Turner Review (2009) which follows the ?market failure? approach to regulation and we contrast this with the alternative ?state failure? approach. Both approaches only offer partial and polarised views into the causes of the crisis. We offer a synthesis and argue that a new conceptual approach to the management of financial markets is required. The essence of this new approach is the recognition that the state and regulation are not external to the market. While this paper largely relates to the UK, it provides potentially important lessons for many other countries.


Author(s):  
Feryad A. Hussain

Radicalisation to violent action is not just a problem in foreign lands. Research has identified numerous politico–psychosocial factors to explain why young people from the UK are now joining terrorist groups such as ISIS. Our understanding has been expanded by the accounts of “returnees” who have subsequently either self-deradicalised or joined a government deradicalisation programme in the role of an Intervention Provider (IP). These individuals are now key to the deradicalisation programme. This article presents the reflections of a clinical psychologist who worked within a social healthcare team managing psychosocial issues related to radicalisation, in conjunction with an allocated IP. The project involved individuals from the Muslim community and, as such, issues discussed are specific to this group. It is acknowledged that the process in general is universally applicable to all groups though specifics may vary (under Trust agreement, details may not be discussed). This article also aims to share basic information on the current Home Office deradicalisation programme and raises questions about the current intervention. It also offers reflections on how the work of IPs may be facilitated and supported by clinical/counselling psychologists and psychotherapists.


Author(s):  
Yu.V. IRKHIN

The article analyzes the problems, achievements and contradictions in the genesis of the contemporary postmodern discourse. The author has carried out complex research, systematized and showed the main features and differences of postmodernism and metamodernism, as well as the role of neoliberal values in their development. The author has considered a new approach to the study of society and politics: neomodernist discourse with the dominant conservative values, opposing postmodern theory, methodology and practice he has identified the features of neomodernism: historicism, patriotism and healthy nationalism, populism, transactionalismn and realism in the world politics.


2002 ◽  
Vol 2 (3) ◽  
pp. 17-22
Author(s):  
A.P. Wyn-Jones ◽  
J. Watkins ◽  
C. Francis ◽  
M. Laverick ◽  
J. Sellwood

Two rural spring drinking water supplies were studied for their enteric virus levels. In one, serving about 30 dwellings, the water was chlorinated before distribution; in the other, which served a dairy and six dwellings the water was not treated. Samples of treated (40 l) and untreated (20 l) water were taken under normal and heavy rainfall conditions over a six weeks period and concentrated by adsorption/elution and organic flocculation. Infectious enterovirus in concentrates was detected in liquid culture and enumerated by plaque assay, both in BGM cells, and concentrates were also analysed by RT-PCR. Viruses were found in both raw water supplies. Rural supplies need to be analysed for viruses as well as bacterial and protozoan pathogens if the full microbial hazard is to be determined.


2020 ◽  
Vol 10 (5) ◽  
pp. 602-609
Author(s):  
Adil H. Awad

Introduction: A new approach for expressing the lattice thermal conductivity of diatomic nanoscale materials is developed. Methods: The lattice thermal conductivity of two samples of GaAs nanobeam at 4-100K is calculated on the basis of monatomic dispersion relation. Phonons are scattered by nanobeam boundaries, point defects and other phonons via normal and Umklapp processes. Methods: A comparative study of the results of the present analysis and those obtained using Callaway formula is performed. We clearly demonstrate the importance of the utilised scattering mechanisms in lattice thermal conductivity by addressing the separate role of the phonon scattering relaxation rate. The formulas derived from the correction term are also presented, and their difference from Callaway model is evident. Furthermore their percentage contribution is sufficiently small to be neglected in calculating lattice thermal conductivity. Conclusion: Our model is successfully used to correlate the predicted lattice thermal conductivity with that of the experimental observation.


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