45 Minute Review of Antimicrobial Resistant Gonorrhea

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Antimicrobial Resistance in N. gonorrhoeae: A Review (PDF Document 5.84 MB - 39 pages)

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Antimicrobial Resistance in N. gonorrhoeae – A Review

Table of Contents – Presentation Slides

  1. Introduction
  2. Objectives
  3. Background
  4. Background
  5. Epidemiology
  6. Key Issues
  7. Key Issues
  8. At Risk
  9. At Risk
  10. Manifestations
  11. Symptoms
  12. Major Sequelae
  13. Diagnosis
  14. NAAT
  15. Culture
  16. Diagnosis
  17. Specimens
  18. Specimens
  19. Management
  20. Treatment
  21. Treatment
  22. Treatment
  23. Treatment
  24. Treatment
  25. Treatment
  26. Treatment
  27. Control
  28. Partner Notification
  29. Test of Cure
  30. Test of Cure
  31. Test of Cure
  32. Treatment Failure
  33. Reporting
  34. Repeat Screening
  35. Surveillance
  36. Prevention
  37. Conclusion
  38. Resources

Slide #1

Introduction

Progressive antimicrobial resistance in Neisseria gonorrhoeae is an emerging public health threat.

The Public Health Agency of Canada (the Agency) released updated recommendations in July 2013 for the diagnosis, treatment, follow-up and reporting of gonorrhea.

Slide #1 – Speaker's Notes


Slide #2

Objectives

To increase awareness and knowledge of the status of antimicrobial resistance of N. gonorrhoeae.

To promote:

Slide #2 – Speaker's Notes


Slide #3

Background

Antimicrobial resistance occurs when bacteria, fungi, viruses, or parasites develop the ability to resist the effects of antimicrobial drugs used to kill them or slow their growth.

A recent report from the World Health Organization (2014) identified antimicrobial resistance as a global threat.

Results from this study showed a significant increase in antimicrobial resistance worldwide.

Warned about the possibility of a post-antibiotic era "in which common infections...can kill."

Slide #3 – Speaker's Notes


Slide #4

Background

Aligns with World Health Organisation's "Global Action Plan to Control the Spread and Impact of Antimicrobial Resistance in Neisseria gonorrhoeae (2012)."

Identified antimicrobial resistant gonorrhea as the next drug resistant 'superbug.'

Slide #4 – Speaker's Notes


Slide #5

Epidemiology

Reported cases of gonococcal infection in Canada have increased since 1997.

Most affected:

A network of people with high-transmission activities may play a key role in current prevalence levels and in sustaining infections within a community.

Slide #5 – Speaker's Notes


Slide #6

Key Issues

Gonococcal infections have been resistant to certain antibiotics.

The problem is worldwide, and is growing.

Gonococcal infections are becoming more difficult to treat.

Potential increase in major sequelae due to prolonged duration of original infection.

Slide #6 – Speaker's Notes


Slide #7

Key Issues

Progressive resistance to penicillin, tetracycline and quinolones has emerged.

Treatment failure with third generation oral and injectable cephalosporins has been observed.

To date, resistance particularly observed among MSM. Footnote *


Slide #7 – Speaker's Notes


Slide #8

At Risk

Individuals who have had sexual contact with a person with a confirmed or suspected gonococcal infection.

Individuals with a history of other STIs, including HIV.

Individuals who have had unprotected sex with a resident of an area with high gonorrhea burden and/or high risk of antimicrobial resistance.

Individuals with a history of previous gonococcal infection.

Slide #8 – Speaker's Notes

Some individuals are more at risk than others of contracting gonorrhea:


Slide #9

At Risk

Sex workers and their sexual partners.

Individuals who have had sex with multiple partners.

Street-involved youth and other homeless populations.

Sexually active youth < 25 years of age.

Men who have unprotected sex with men.

Slide #9 – Speaker's Notes

Some individuals are more at risk than others of contracting gonorrhea:


Slide #10

Manifestations

Youth (≥ 9 years) and Adults
Neonates and Infants: Females:
Ophthalmia Neonatorum Cervicitis
Conjunctivitis Pelvic Inflammatory Disease
Sepsis Urethritis
Disseminated gonococcal infectionFootnote * Perihepatitis
  Bartholinitis
Children: Females and Males:
Urethritis Pharyngeal Infection
Vaginitis Conjunctivitis
Conjunctivitis Proctitis
Pharyngeal Infection Disseminated gonococcal infectionFootnote *
Proctitis  
Disseminated gonococcal infectionFootnote *  
  Males:
  Urethritis
  Epididymitis
Footnote *
*e.g., arthritis, dermatitis, endocarditis, meningitis

Slide #10 – Speaker's Notes


Slide #11

Symptoms

Females Males
Often asymptomatic Often symptomatic
Vaginal discharge Urethral discharge
Dysuria Dysuria
Abnormal vaginal bleeding Urethral itch
Lower abdominal pain Testicular pain and/or swelling or symptoms of epididymitis
Deep dyspareunia Rectal pain and discharge (with proctitis)
Rectal pain and discharge (with proctitis)  

In both females and males, rectal and pharyngeal infections are more likely to be asymptomatic.

Slide #11 – Speaker's Notes


Slide #12

Major Sequelae

Youth (≥ 9 years) and Adults
Females Males
Pelvic inflammatory disease Epididymo-orchitis
Infertility Reactive arthritis (oculo-urethro-synovial syndrome)
Ectopic pregnancy Infertility (rare)
Chronic pelvic pain Disseminated gonococcal infectionFootnote *
Reactive arthritis (oculo-urethro-synovial syndrome)  
Disseminated gonococcal infectionFootnote *  
Footnote *
*e.g., arthritis, dermatitis, endocarditis, meningitis

Slide #12 – Speaker's Notes


Slide #13

Diagnosis

Depending on clinical situation, consider collecting both cultures and NAAT especially in symptomatic patients.

Slide #13 – Speaker's Notes


Slide #14

NAAT

Increase in the number of cases diagnosed due to higher sensitivity and specificity of test.

NAAT may be the only available testing method in some jurisdictions.

However, culture is strongly recommended because it allows for testing of antimicrobial susceptibility.

Where NAAT is routinely used, sentinel surveillance mechanisms using culture are important to ensure continued monitoring for antimicrobial resistance.

Slide #14 – Speaker's Notes


Slide #15

Culture

Critical for improved public health monitoring of antimicrobial resistance and trends.

Provides clinicians with important case management information.

Cultures obtained less than 48 hours after exposure may give false negative results.

Slide #15 – Speaker's Notes


Slide #16

Diagnosis

Cultures are particularly important in the following situations:

Slide #16 – Speaker's Notes


Slide #17

Specimens

Asymptomatic Patients

Take specimen from any exposed site

Slide #17 – Speaker's Notes


Slide #18

Specimens

Symptomatic Patients

Take specimen from any exposed site

Slide #18 – Speaker's Notes


Slide #19

Management

Appropriate samples based on site of exposure and test type should be obtained prior to treatment.

Presumptive treatment is to be provided for:

Syndromic management:

Or if patient is being treated as a contact

Mucopurulent cervicitis

Non-gonococcal urethritis

Epididymitis

Pelvic inflammatory disease

When making treatment decisions, relevant history, physical examination and epidemiologic factors should be considered.

Slide #19 – Speaker's Notes


Slide #20

Treatment

Monotherapy should be avoided.

To help prevent the spread of antimicrobial resistant gonorrhea.

Using medications with two different mechanisms of action may also improve treatment efficacy.

Combination therapy also provides effective treatment for chlamydia given high rates of concomitant infections.

Slide #20 – Speaker's Notes


Slide #21

Treatment

Cephalosporins

Cefixime treatment failures in MSM have recently been documented.

Ceftriaxone + azithromycin is recommended as the preferred treatment for gonococcal infections in MSM.

Slide #21 – Speaker's Notes


Slide #22

Treatment

Azithromycin

Azithromycin should not be used as monotherapy. Resistance has been reported.

Exception: when cephalosporins are contraindicated
- Allergy to cephalosporins

History of anaphylactic reaction to penicillin:
Cross-sensitivity between penicillin and 2nd or 3rd generation cephalosporins is low, but if patient has history of immediate hypersensitivity reaction to penicillin, may also react to cephalosporins.

Slide #22 – Speaker's Notes


Slide #23

Treatment

Uncomplicated anogenital infection (urethral, rectal) and pharyngeal infection ≥ 9 years of age

Preferred treatment

Ceftriaxone 250 mg IM in a single dose + Azithromycin 1 g PO in a single dose

Full treatment details at:
http://www.phac-aspc.gc.ca/std-mts/sti-its/cgsti-ldcits/section-5-6-eng.php

Slide #23 – Speaker's Notes



Slide #24

Treatment

Uncomplicated anogenital infection (urethral, rectal) only in adults and youth (≥ 9 years), excluding MSM is:

Preferred treatment

Cefixime 800 mg PO in a single dose + Azithromycin 1 g PO in a single dose

Full treatment details at:
http://www.phac-aspc.gc.ca/std-mts/sti-its/cgsti-ldcits/section-5-6-eng.php

Slide #24 – Speaker's Notes



Slide #25

Treatment

Quinolones

Due to the rapid increase in quinolone-resistant gonorrhea, quinolones are no longer recommended.

Quinolones should ONLY be given as an alternative treatment IF:

Antimicrobial susceptibility testing is available and quinolone susceptibility is demonstrated

OR

Local quinolone resistance is under 5% AND a test of cure can be performed.

Slide #25 – Speaker's Notes


Slide #26

Treatment

Full treatment recommendations, including alternative treatments available

The Public Health Agency of Canada's Canadian STI Guidelines

Slide #26 – Speaker's Notes


Slide #27

Control

Case finding and partner notification are critical in controlling infection.

Local public health authorities may assist with partner notification and with appropriate referral for clinical evaluation, testing, treatment and health education.

Gonococcal infections are reportable in all provinces and territories; positive test results should be reported to local public health authorities.

Slide #27 – Speaker's Notes

IMPORTANT: Gonorrhea is a reportable infection in all provinces and territories. All positive test results should be reported to local public health authorities.


Slide #28

Partner Notification

All sexual partners within 60 days prior to symptom onset or date of specimen collections (if asymptomatic) should be notified, tested and empirically treated without waiting for test results.

The length of time for the trace-back period should be extended in the following circumstances:

Slide #28 – Speaker's Notes


Slide #29

Test of Cure

Test of Cure Post-Treatment
3 – 7 days later → Culture
2 – 3 Weeks later → NAAT

Slide #29 – Speaker's Notes


Slide #30

Test of Cure

Test of cure should be completed in all cases; particularly important when:

Slide #30 – Speaker's Notes


Slide #31

Test of Cure

Cultures from all positive sites should also be done in the following situations:

Slide #31 – Speaker's Notes


Slide #32

Treatment Failure

TREATMENT FAILURE is defined as one of the following in the absence of reported sexual contact during post-treatment period:

Slide #32 – Speaker's Notes


Slide #33

Reporting

Local public health should be promptly notified of treatment failures.

Allows provincial and territorial STI programs to quickly identify emerging patterns of antimicrobial resistance within their jurisdictions.

Enables provincial and territorial to collaborate with the Public Health Agency of Canada to issue timely electronic alerts.

Slide #33 – Speaker's Notes


Slide #34

Repeat Screening

Repeat screening for individuals with a gonococcal infection is recommended 6 months post-treatment.

Slide #34 – Speaker's Notes


Slide #35

Surveillance

National enhanced surveillance protocol to integrate epidemiologic and treatment failure data into existing laboratory-based monitoring of antimicrobial resistant gonorrhea.

Important to rapidly identify changes in antimicrobial susceptibility and assess risk factors associated with the development of resistance.

Enables early identification and prevention of the spread of drug-resistant gonorrhea and assists in identifying appropriate treatment regimens.

Slide #35 – Speaker's Notes


Slide #36

Prevention

Provide information to encourage consistent safe sex practices.

Counsel on sequelae and on potential impacts on reproductive system.

Explain the need to abstain from unprotected sex until at least 3 days after completion of treatment and no more symptoms.

Discuss the risk of re-infection.

Slide #36 – Speaker's Notes


Slide #37

Conclusion

To successfully address the public health risk of antimicrobial resistant gonorrhea, primary care and public health professionals need to work together.

Slide #37 – Speaker's Notes


Slide #38

Resources

To access the chapter and additional resources:

http://www.phac-aspc.gc.ca/std-mts/sti-its/cgsti-ldcits/section-5-6-eng.php
The above based on Public Health Agency of Canada's Canadian STI Guidelines

This document is intended to provide information to public health and clinical professionals and does not supersede any provincial/territorial legislative, regulatory, policy and practice requirements or professional guidelines that govern the practice of health professionals in their respective jurisdictions, whose recommendations may differ due to local epidemiology or context.

Slide #38 – Speaker's Notes

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