Experimental Human Infection with Neisseria Gonorrhoeae
“Experimental Human Infection With Neisseria Gonorrhoeae”
This is a Phase 1, interventional, non-randomized, experimental infection model study with healthy adult males adults (N=32) between the ages of 18-36 at study enrollment. The study is designed to test the requirements of predicted N. gonorrhoeae virulence determinants for gonococcal infection in the male urethra. The duration for all participants will be about 3 weeks. Study duration will be approximately about 18 months for implementation and enrollment. The primary objectives of the present study are to: (1) compare infectivity of different isogenic mutants with wild-type (WT) N. gonorrhoeae in noncompetitive infections and to (2) assess relative fitness of the mutant in competitive infections initiated by inocula containing equivalent numbers of both WT and mutant strains for mutants with WT infectivity.
Drug - Cefixime
Mandatory rescue therapy consisting of cefixime 400 mg orally in a single dose: on patient request, at the onset of symptoms or on the 5th study day after inoculation.
Drug - Ceftriaxone
Mandatory rescue therapy consisting of ceftriaxone 250 mg intramuscularly in a single dose: on patient request, at the onset of symptoms or on the 5th study day after inoculation.
Drug - Ciprofloxacin
Mandatory antibiotic treatment failure therapy: Ciprofloxacin 500 mg orally in a single dose: if the subject has a positie test of cure 1 week post initial antibiotic treatment
Biological - Neisseria gonorrhoeae strain FA1090 A26
0.4 mL of a suspension containing 10^5 - 10^6 CFU of Neisseria gonorrhoeae, in phosphate-buffered saline, delivered to the anterior urethra through a No.8 pediatric French catheter.
Biological - Neisseria gonorrhoeae strain FA7537
0.4 mL of a suspension containing 10^5 - 10^6 CFU of Neisseria gonorrhoeae, in phosphate-buffered saline, delivered to the anterior urethra through a No.8 pediatric French catheter
Experimental Human Infection With Isogenic Mutants of Neisseria Gonorrhoeae