Experimental infection with Haemophilus ducreyi in persons who are infected with HIV does not cause local or augment systemic viral replication

Diane M. Janowicz, Klara Tenner-Racz, Paul Racz, Tricia L. Humphreys, Carol Schnizlein-Bick, Kate R. Fortney, Beth Zwickl, Barry P. Katz, James J. Campbell, David D. Ho, Stanley M. Spinola

Research output: Contribution to journalArticle

11 Scopus citations


We infected 11 HIV-seropositive volunteers whose CD4+ cell counts were >350 cells/μL (7 of whom were receiving antiretrovirals) with Haemophilus ducreyi. The papule and pustule formation rates were similar to those observed in HIV-seronegative historical control subjects. No subject experienced a sustained change in CD4+ cell count or HIV RNA level. The cellular infiltrate in biopsy samples obtained from the HIV-seropositive and HIV-seronegative subjects did not differ with respect to the percentage of leukocytes, neutrophils, macrophages, or T cells. The CD4+:CD8 + cell ratio in biopsy samples from the HIV-seropositive subjects was 1: 3, the inverse of the ratio seen in the HIV-seronegative subjects (P < .0001). Although CD4+ cells proliferated in lesions, in situ hybridization and reverse-transcription polymerase chain reaction for HIV RNA was negative. We conclude that experimental infection in HIV-seropositive persons is clinically similar to infection in HIV-seronegative persons and does not cause local or augment systemic viral replication. Thus, prompt treatment of chancroid may abrogate increases in viral replication associated with natural disease.

Original languageEnglish (US)
Pages (from-to)1443-1451
Number of pages9
JournalJournal of Infectious Diseases
Issue number10
StatePublished - May 15 2007


ASJC Scopus subject areas

  • Immunology and Allergy
  • Infectious Diseases

Cite this