Emerging Infections 5. Based on presentations given at the 2000 Interscience Conference on Antimicrobial Agents and Chemotherapy, Toronto, Canada. Edited by W Michael  Scheld, William A  Craig, and , James M  Hughes. Washington (DC): ASM Press. $79.95 (paper). xv + 242 p + 11 pl; ill.; index. ISBN: 1–55581–216–3. 2001.

2002 ◽  
Vol 77 (3) ◽  
pp. 365-365
Author(s):  
Alfred W Crosby
Author(s):  
Alex G. Stewart ◽  
Sam Ghebrehewet ◽  
Peter MacPherson

This chapter describes the increasing global problem of new and emerging infections, many zoonotic, ranging from the recently described Middle East respiratory syndrome (MERS) to bacteria now resistant to all locally available antimicrobial agents. The environmental, human, technological, and microbial factors contributing to disease emergence are assessed. Changes in environment and land use result in the spread of vector-borne diseases into new areas, and global travel and trade may introduce pathogens to non-immune populations. The breakdown of health services following political change or during conflict can result in the resurgence of previously controlled communicable diseases. The importance of collaboration between human and veterinary health services is emphasized, and the UK ‘DATER’ strategy (Detection, Assessment, Treatment, Escalation, Recovery) for dealing with pandemic influenza is applied to new and emerging infections. Finally, the role of internet-based, syndromic surveillance to create early awareness of new infections is considered.


2019 ◽  
Vol 64 (3) ◽  
Author(s):  
Yang Liu ◽  
Yaoju Tan ◽  
M. Mahmudul Islam ◽  
Yuanyuan Cao ◽  
Xiaoyun Lu ◽  
...  

ABSTRACT Mycobacterium abscessus is intrinsically resistant to most antimicrobial agents. The emerging infections caused by M. abscessus and the lack of effective treatment call for rapid attention. Here, we intended to construct a selectable marker-free autoluminescent M. abscessus strain (designated UAlMab) as a real-time reporter strain to facilitate the discovery of effective drugs and regimens for treating M. abscessus. The UAlMab strain was constructed using the dif/Xer recombinase system. In vitro and in vivo activities of several drugs, including clofazimine and TB47, a recently reported cytochrome bc1 inhibitor, were assessed using UAlMab. Furthermore, the efficacy of multiple drug combinations, including the clofazimine and TB47 combination, were tested against 20 clinical M. abscessus isolates. The UAlMab strain enabled us to evaluate drug efficacy both in vitro and in live BALB/c mice in a real-time, noninvasive fashion. Importantly, although TB47 showed marginal activity either alone or in combination with clarithromycin, amikacin, or roxithromycin, the drug markedly potentiated the activity of clofazimine, both in vitro and in vivo. This study demonstrates that the use of the UAlMab strain can significantly facilitate rapid evaluation of new drugs and regimens. The clofazimine and TB47 combination is effective against M. abscessus, and dual/triple electron transport chain (ETC) targeting can be an effective therapeutic approach for treating mycobacterial infections.


2018 ◽  
Vol 5 (4) ◽  
Author(s):  
Adi V Gundlapalli ◽  
Susan E Beekmann ◽  
Donald R Graham ◽  
Philip M Polgreen ◽  

Abstract Background In 2012, the US Food and Drug Administration (FDA) required drug manufacturers to give advance notice of impending drug shortages. A survey of infectious diseases (ID) physicians was undertaken to determine the impact of this requirement and to follow-up on prior perceptions of ID physicians on shortages of antimicrobial agents. Methods We used a web-based survey of ID physician members of the Emerging Infections Network in 2016. Results Of the 701 of 1597 members (44%) who responded, 70% reported the need to modify their antimicrobial choice because of a shortage in the prior 2 years. A majority (73%) reported the shortages affected patient care or outcomes by the use of broader-spectrum (75%), more costly (58%), less effective second-line (45%), or more toxic agents (37%). The most commonly reported antimicrobials in short supply were piperacillin-tazobactam, ampicillin-sulbactam, meropenem, cefotaxime, and cefepime. Respondents learned of shortages from hospital notification, from a colleague, contact from pharmacy after ordering the agent in short supply, or FDA or other website. The antimicrobial stewardship programs (ASPs) of a majority (83%) of respondents’ institutions had developed approaches to deal with shortages. Although 71% indicated that communications were sufficient, most (87%) did not perceive any improvement in communications about shortages since the 2012 FDA requirement. Conclusions The persistence of antimicrobial agent shortages reported by ID physicians is disturbing as is the resulting need to use broader-spectrum or more toxic agents. The prominent role of ASPs in helping to deal with shortages, effective communication channels, and the lack of perceived improvement in FDA’s communication strategy merit further consideration.


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