Impact of Rapid Susceptibility Testing and Antibiotic Selection Strategy on the Emergence and Spread of Antibiotic Resistance in Gonorrhea

Details

• Alternative Title:
  J Infect Dis
• Personal Author:
  Tuite, Ashleigh R. ; Gift, Thomas L. ; Chesson, Harrell W. ; Hsu, Katherine ; Salomon, Joshua A. ; Grad, Yonatan H.
• Description:
  Background
  
  Increasing antibiotic resistance limits treatment options for gonorrhea. We examined the impact of a hypothetical point-of-care (POC) test reporting antibiotic susceptibility profiles on slowing resistance spread.
  
  Methods
  
  A mathematical model describing gonorrhea transmission incorporated resistance emergence probabilities and fitness costs associated with resistance based on characteristics of ciprofloxacin (A), azithromycin (B), and ceftriaxone (C). We evaluated time to 1% and 5% prevalence of resistant strains among all isolates with the following: (1) empiric treatment (B and C), and treatment guided by POC tests determining susceptibility to (2) A only and (3) all 3 antibiotics.
  
  Results
  
  Continued empiric treatment without POC testing was projected to result in >5% of isolates being resistant to both B and C within 15 years. Use of either POC test in 10% of identified cases delayed this by 5 years. The 3 antibiotic POC test delayed the time to reach 1% prevalence of triply-resistant strains by 6 years, whereas the A-only test resulted in no delay. Results were less sensitive to assumptions about fitness costs and test characteristics with increasing test uptake.
  
  Conclusions
  
  Rapid diagnostics reporting antibiotic susceptibility may extend the usefulness of existing antibiotics for gonorrhea treatment, but ongoing monitoring of resistance patterns will be critical.
  
  
• Subjects:
  Anti-Bacterial Agents Azithromycin Ceftriaxone Ciprofloxacin Disease Transmission, Infectious Drug Resistance, Microbial Gonorrhea Humans Microbial Sensitivity Tests Models, Theoretical Neisseria Gonorrhoeae Point-of-Care Systems

  More +
• Source:
  J Infect Dis. 2017; 216(9):1141-1149.
• Pubmed ID:
  28968710
• Pubmed Central ID:
  PMC5853443
• Document Type:
  Journal Article
• Volume:
  216
• Issue:
  9
• Collection(s):
  CDC Public Access
• Main Document Checksum:
  urn:sha256:28d1bd4b361a8073d5bf0bf180a5766991889d1566030373acc4c1d63df4cf86
• Download URL:
  https://stacks.cdc.gov/view/cdc/52803/cdc_52803_DS1.pdf
• File Type:
  [PDF - 854.69 KB ]