scholarly journals Where have all the susceptible gonococci gone? A historical review of changes in MIC distribution over the past 75 years

2019 ◽  
Author(s):  
Chris Kenyon ◽  
Jolein Laumen ◽  
Dorien Van Den Bossche ◽  
Christophe Van Dijck

Abstract Background Does the emergence of antimicrobial resistance in Neisseria gonorrhoeae include the erasure of highly susceptible strains or does it merely involve a stretching of the MIC distribution? If it was the former this would be important to know as it would increase the probability that the loss of susceptibility is irreversible.Methods We conducted a historical analysis based on a literature review of changes of N. gonorrhoeae MIC distribution over the past 75 years for 3 antimicrobials (benzylpenicillin, ceftriaxone and azithromycin) in five countries (Denmark, Japan, South Africa, the United Kingdom and the United States).Results Changes in MIC distribution were most marked for benzylpenicillin and showed evidence of a right shifting of MIC distribution that was associated with a reduction/elimination of susceptible strains in all countries. In the case of ceftriaxone and azithromycin, where only more recent data was available, right shifting was also found in all countries but the extent of right shifting varied and the evidence for the elimination of susceptible strains was more mixed.Conclusions The finding of right shifting of MIC distribution combined with reduction/elimination of susceptible strains is concerning since it suggests that this shifting may not be reversible. Since excess antimicrobial consumption is likely to be responsible for this right shifting, this insight provides additional impetus to promote antimicrobial stewardship.

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Chris Kenyon ◽  
Jolein Laumen ◽  
Dorien Van Den Bossche ◽  
Christophe Van Dijck

Abstract Background Does the emergence of antimicrobial resistance in Neisseria gonorrhoeae include the erasure of highly susceptible strains or does it merely involve a stretching of the MIC distribution? If it was the former this would be important to know as it would increase the probability that the loss of susceptibility is irreversible. Methods We conducted a historical analysis based on a literature review of changes of N. gonorrhoeae MIC distribution over the past 75 years for 3 antimicrobials (benzylpenicillin, ceftriaxone and azithromycin) in five countries (Denmark, Japan, South Africa, the United Kingdom and the United States). Results Changes in MIC distribution were most marked for benzylpenicillin and showed evidence of a right shifting of MIC distribution that was associated with a reduction/elimination of susceptible strains in all countries. In the case of ceftriaxone and azithromycin, where only more recent data was available, right shifting was also found in all countries but the extent of right shifting varied and the evidence for the elimination of susceptible strains was more mixed. Conclusions The finding of right shifting of MIC distribution combined with reduction/elimination of susceptible strains is of concern since it suggests that this shifting may not be reversible. Since excess antimicrobial consumption is likely to be responsible for this right shifting, this insight provides additional impetus to promote antimicrobial stewardship.


2019 ◽  
Author(s):  
Chris Kenyon ◽  
Jolein Laumen ◽  
Dorien Van Den Bossche ◽  
Christophe Van Dijck

Abstract Background Does the emergence of antimicrobial resistance in Neisseria gonorrhoeae include the erasure of highly susceptible strains or does it merely involve a stretching of the MIC distribution? If it was the former this would be important to know as it would increase the probability that the loss of susceptibility is irreversible.Methods We conducted a historical analysis based on a literature review of changes of N. gonorrhoeae MIC distribution over the past 75 years for 3 antimicrobials (benzylpenicillin, ceftriaxone and azithromycin) in five countries (Denmark, Japan, South Africa, the United Kingdom and the United States).Results Changes in MIC distribution were most marked for benzylpenicillin and showed evidence of a right shifting of MIC distribution that was associated with a reduction/elimination of susceptible strains in all countries. In the case of ceftriaxone and azithromycin, where only more recent data was available, right shifting was also found in all countries but the extent of right shifting varied and the evidence for the elimination of susceptible strains was more mixed.Conclusions The finding of right shifting of MIC distribution combined with reduction/elimination of susceptible strains is concerning since it suggests that this shifting may not be reversible. Since excess antimicrobial consumption is likely to be responsible for this right shifting, this insight provides additional impetus to promote antimicrobial stewardship.


2019 ◽  
Author(s):  
Chris Kenyon ◽  
Jolein Laumen ◽  
Dorien Van Den Bossche ◽  
Christophe Van Dijck

Abstract Background Does the emergence of antimicrobial resistance in Neisseria gonorrhoeae include an elimination of highly susceptible strains or does it merely involve a stretching of the MIC distribution? If it was the former this would be important to know as it would increase the probability that the loss of susceptibility is irreversible.Methods We conducted a historical analysis based on a literature review of changes of N. gonorrhoeae MIC distribution over the past 75 years for 3 antimicrobials (benzylpenicillin, ceftriaxone and azithromycin) in five countries (Denmark, Japan, South Africa, the United Kingdom and the United States).Results Changes in MIC distribution were most marked for benzylpenicillin and showed evidence of a right shifting of MIC distribution that occurred in up to 3 stages and was associated with a reduction/elimination of susceptible strains in all countries. In the case of ceftriaxone and azithromycin, right shifting was also found in all countries but the extent of right shifting varied and the evidence for the elimination of susceptible strains was more mixed.Conclusions Further research is required to assess why some populations have undergone a stage 3 as opposed to a stage 1 or 2 transition, with the greater loss of susceptible isolates that this involves. If differential antimicrobial consumption was found to be responsible, then this would provide additional impetus to promote antimicrobial stewardship.


1993 ◽  
Vol 7 (2) ◽  
pp. 525-528 ◽  
Author(s):  
Randy G. Westbrooks ◽  
Gene Cross

Serrated tussock [(Nassella trichotoma (Nees) Hack. # STDTR] is a clump-forming, perennial, cool season grass. It is native to South America, where it occurs in Argentina, Brazil, Chile, Peru, and Uruguay. In the past century, it has been introduced to New Zealand, Australia and South Africa, and also occurs in small acreages in France, Italy, and the United Kingdom. Serrated tussock occurs in fields, wastelands, and pastures, but rarely in wet or shaded areas.


2009 ◽  
Vol 7 (4) ◽  
pp. 901-910
Author(s):  
Robert E. Goodin ◽  
James Mahmud Rice

Judging from Gallup Polls in the United States, the United Kingdom, and Australia, opinion often changes during an election campaign. Come election day itself, however, opinion often reverts back nearer to where it was before the campaign began. That that happens even in Australia, where voting is compulsory and turnout is near-universal, suggests that differential turnout among those who have and have not been influenced by the campaign is not the whole story. Inspection of individual-level panel data from 1987 and 2005 British General Elections confirms that between 3 and 5 percent of voters switch voting intentions during the campaign, only to switch back toward their original intentions on election day. One explanation, we suggest, is that people become more responsible when stepping into the poll booth: when voting they reflect back on the government's whole time in office, rather than just responding (as when talking to pollsters) to the noise of the past few days' campaigning. Inspection of Gallup Polls for UK snap elections suggests that this effect is even stronger in elections that were in that sense unanticipated.


1951 ◽  
Vol 5 (2) ◽  
pp. 416-416

A meeting of the International Sugar Council was held in London, June 26 to July 20, 1950. The meeting was attended by delegates of Australia, Belgium, Brazil, Cuba, Czechoslovakia, Dominican Republic, France, Haiti, Indonesia, the Netherlands, Peru, Philippine Republic, Poland, Portugal, South Africa, the United Kingdom, Yugoslavia, and the United States. The purpose of the meeting was to discuss the world situation in sugar and the proposal for a new international sugar agreement. The council adopted a protocol which extended the international sugar agreement of 1937 one year from August 31, 1950. During 1950, the council created a special committee to 1) study the changing sugar situation as it related to the need or desirability for negotiating a new agreement, and 2) report to the council, as occasion might arise, on its findings and recommendations as to the possible basis of a new agreement. The special committee prepared a document which set forth certain proposals in the form of a preliminary draft agreement. The draft agreement included six fundamental bases: 1) the regulation of exports, 2) the stabilization of sugar prices on the world market, 3) a solution to the currency problem, 4) the limitation of sugar production by importing countries, 5) measures to increase consumption of sugar and 6) the treatment of non-signatory countries. The draft was then considered by the council at its meeting on July 20 at which time the council decided to submit it to member and observer governments for comments and to transmit such comments for consideration at a meeting of the special committee.


2021 ◽  

In our rapidly globalising world, “the global scholar” is a key concept for reimagining the roles of academics at the nexus of the global and the local. This book critically explores the implications of the concept for understanding postgraduate studies and supervision. It uses three conceptual lenses – “horizon”, “currency” and “trajectory” – to organise the thirteen chapters, concluding with a reflection on the implications of Covid-19 for postgraduate studies and supervision. Authors bring their perspectives on the global scholar from a variety of contexts, including South Africa, Australia, the United States, the United Kingdom, Chile, Germany, Cyprus, Kenya and Israel. They explore issues around policy, research and practice, sharing a concern with the relation between the local and the global, and a passion for advancing postgraduate studies and supervision.


2021 ◽  
pp. 1-8
Author(s):  
Steven Gow Calabresi

This book is about the stunning birth and growth of judicial review in the civil law world, since 1945. In Volume I of this two-volume series, I showed that judicial review was born and grew in common law G-20 constitutional democracies and in Israel primarily: (1) when there is a need for a federalism or a separation of powers umpire, (2) when there is a rights from wrongs dynamic, (3) when there is borrowing, and (4) when the political structure of a country’s institutions leaves space within which the judiciary can operate. The countries discussed in Volume I were the following: (1) the United States, (2) Canada, (3) Australia, (4) India, (5) Israel, (6) South Africa, and (7) the United Kingdom....


2020 ◽  
Vol 22 (3) ◽  
pp. 233-245
Author(s):  
Yasmine Dominguez-Whitehead ◽  
Felix Maringe

PurposeThis paper provides a cross-national analysis of PhD supervision models, milestones and examination procedures in order to compare PhD programs and their practices.Design/methodology/approachA comparative approach is employed, which systematically interrogates PhD supervision models, milestones and examination procedures in the United Kingdom, South Africa and the United States via a comprehensive review of the practices and literature.FindingsThe findings indicate the ramifications of the different approaches and highlight the benefits and drawbacks associated with the different models.Originality/valueBy making explicit the dominant supervision models, milestones and examination procedures that exist in the United Kingdom, South Africa and the United States, the authors shed light on the somewhat obscure path to earning a PhD degree.


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