Effects of an automatic discontinuation of antibiotics policy: A novel approach to antimicrobial stewardship

PURPOSE

A novel automatic discontinuation policy implemented within an antimicrobial stewardship program (ASP) is described, and results of an evaluation of the policy's effects on antibiotic usage are reported.

METHODS

A retrospective, before-and-after study was conducted at an 800-bed, tertiary care, academic teaching hospital to evaluate selected antibiotic usage outcomes in both intensive care unit (ICU) and non-ICU adult patients targeted for ASP interventions before and after implementation of an automatic discontinuation of antibiotics policy (ADAP) authorizing the ASP team to automatically halt antibiotic therapy in cases involving inappropriate duplicate antimicrobial coverage or excess duration of therapy. The primary outcome was total days of antibiotic therapy. Secondary outcomes included excess days of therapy and rates of 30-day readmission, Clostridioides difficile infection, and multidrug-resistant infection.

RESULTS

There were no statistically significant differences in group demographics or clinical characteristics. The most common indication for antibiotics was hospital-acquired pneumonia, and the most common reason for ASP intervention was excess duration of therapy. The mean total number of antibiotic days per patient was reduced from 7.6 days in the pre-ADAP group to 6.6 days in the post-ADAP group (p < 0.05). The mean number of excess days of antibiotics was similarly reduced, from 2.3 days to 1.5 days, after implementation of the ADAP (p < 0.05).

CONCLUSION

Adoption of an ADAP-a more active approach to ASP interventions-was effective in reducing overall antibiotic usage and improving the efficiency of the ASP.

Herpes simplex virus in African American heterosexual males: the roles of age and male circumcision

BACKGROUND

Male circumcision is protective against human immunodeficiency virus (HIV) and select other STIs. The protective role of male circumcision in genital herpes simplex virus (HSV) infection and disease, however, remains controversial.

METHODS

We evaluated data from a sample of heterosexual black men attending a sexually transmitted diseases clinic to determine if circumcision status influenced HSV-1 and HSV-2 seroprevalence, clinical genital disease, or asymptomatic shedding. Consenting participants answered questionnaires detailing sexual history, then underwent a focused physical examination, serological testing for HSV-1 and HSV-2, and collection of genital swabs for virus detection. Univariate and multivariate analyses were performed to assess the relationship of circumcision status to HSV seroprevalence.

RESULTS

Of 460 men, 335 (73%) were circumcised and 125 (27%) were not circumcised; 61% were HSV-1 positive and 46% were HSV-2 positive. HSV-2 seroprevalence did not significantly differ between circumcised and uncircumcised men. However, uncircumcised men had a significantly higher HSV-1 seroprevalence than circumcised men (OR: 1.85; CI: 1.15-2.96). This difference in seroprevalence occurred only in men between 18 and 25 years of age (OR: 2.83; CI: 1.38-5.83) with men over 26 years of age having similar HSV-1 seroprevalence. Lack of circumcision remained independently associated with higher HSV-1 seroprevalence after adjusting for age, years since sexual debut, and lifetime number of sexual partners. For both groups, 20% of men had genital lesions on physical examination. Of circumcised and uncircumcised men with genital lesions, 33% and 31% were actively shedding HSV-1 or HSV-2 from lesions, respectively. Asymptomatic HSV shedding was observed in 12 participants, all of whom were circumcised.

CONCLUSIONS

Lack of male circumcision is associated with higher HSV-1, but not HSV-2, seroprevalence in young black heterosexual men.

The major genetic determinants of HIV-1 control affect HLA class I peptide presentation

Infectious and inflammatory diseases have repeatedly shown strong genetic associations within the major histocompatibility complex (MHC); however, the basis for these associations remains elusive. To define host genetic effects on the outcome of a chronic viral infection, we performed genome-wide association analysis in a multiethnic cohort of HIV-1 controllers and progressors, and we analyzed the effects of individual amino acids within the classical human leukocyte antigen (HLA) proteins. We identified >300 genome-wide significant single-nucleotide polymorphisms (SNPs) within the MHC and none elsewhere. Specific amino acids in the HLA-B peptide binding groove, as well as an independent HLA-C effect, explain the SNP associations and reconcile both protective and risk HLA alleles. These results implicate the nature of the HLA-viral peptide interaction as the major factor modulating durable control of HIV infection.

The Spectrum of Genital Herpes Simplex Virus Infection in Men Attending a Sexually Transmitted Disease Clinic

BACKGROUND

The spectrum of genital herpes (GH) has been understudied in men, especially African American men.

METHODS

Consecutive men attending a sexually transmitted diseases clinic were enrolled in a study of GH epidemiology. Consenting participants answered questionnaires detailing their sexual and social activities and underwent serological testing for herpes simplex virus types 1 and 2 (HSV-1 and -2) and collection of genital swabs for viral detection.

RESULTS

Of the 516 men enrolled, 465 (90%) were African American. Antibodies to HSV-1 were present in 315 (61%) of participants, and 233 (45%) had antibodies to HSV-2. Factors associated with HSV-2 infection included older age and African American race. HSV was detected in genital swabs from 52 men; 43 (82.7%) swabs were HSV-2 positive, and 9 (17.3%) were HSV-1 positive. The overall viral shedding rate among men (n = 247) with evidence of GH (HSV-1 or HSV-2 infection) was 21.1%, and the asymptomatic shedding rate in this same group was 5.2%. The sensitivities of culture for detection of HSV-1 and HSV-2 were .22 and .58, respectively, compared with that of polymerase chain reaction.

CONCLUSIONS

Genital HSV infections are common and largely unrecognized among this segment of the population. HSV-1 infection constitutes a nontrivial proportion of GH in these men.

Historical correlates of genital herpes simplex virus type 2 infection in men attending an STD clinic

BACKGROUND/OBJECTIVES

While nearly one in four Americans has antibodies to HSV-2, only one of 40 reports a history of genital herpes (GH). The goal of this study was to correlate questions designed to elicit a GH history with serological evidence of HSV-2 in male STD clinic attendees.

METHODS

Consecutive males were enrolled in a study of the epidemiology of GH. Consenting men answered questionnaires regarding their histories of possible GH and underwent serological testing for HSV-1 and HSV-2. Association statistics between response to each question and HSV-2 serological status were calculated.

RESULTS

Of 328 men enrolled, 148 (46%) had HSV-2 antibodies. 14 (4.3%) reported a history of GH when queried as part of a list of other STD (sensitivity (S) 0.08). 17 (5.2%) reported a history of GH when asked directly "Do you have genital herpes?" (S 0.09). 75 (21.1%) participants reported a history of a recurring genital sore, ulcer, or zipper cut (S 0.32). Overall, 64.2% of HSV-2 seropositive men answered "no" to all three questions. A "yes" response to any of the questions was only 36% sensitive for predicting HSV-2 infection.

CONCLUSION

Few HSV-2 infected men report either a history of GH or are aware that they are infected. Asking about a history of recurrent genital sores was a more sensitive historical marker of HSV-2 infection than asking about a history of "genital herpes."

Risk-taking and health-seeking behavior in men with a history of urethritis: is there a learning curve?

BACKGROUND AND OBJECTIVES

Studies addressing how past experience with sexually transmitted diseases (STD) influence health-seeking behaviors among at-risk men are few.

GOAL

The goal of this study was to determine whether health-seeking behaviors among men diagnosed with urethritis differ based on whether they report prior urethritis.

STUDY DESIGN

Male STD clinic attendees answered a questionnaire regarding their demographic, sexual, and health-seeking characteristics. The men were stratified based on whether they reported prior urethritis.

RESULTS

Of 466 men, 297 reported prior urethritis. Symptomatic men diagnosed with urethritis who reported prior urethritis did not recognize their symptoms as a possible STD earlier than those reporting no urethritis history; there was also no difference between the groups in their interval to presenting for care once symptoms were recognized as a possible STD. Furthermore, men with prior urethritis were as likely to engage in sex acts once they recognized their symptoms as a possible STD manifestation.

CONCLUSION

Compared with men without prior urethritis, men with urethritis symptoms who reported prior urethritis did not recognize symptoms earlier, alter health-seeking behavior, or curtail sexual activity.

Comparison of STD burden and risk among men with and without regular doctors attending a southern urban STD clinic

BACKGROUND

Studies addressing health-seeking behaviors among men at risk for STD are few; this study examines how having a regular doctor might influence risk-taking or STD prevalence.

GOAL

The goal was to examine demographic, sexual, and health-seeking characteristics of male STD clinic attendees.

STUDY DESIGN

Randomly selected men attending an STD clinic answered a questionnaire regarding the aforementioned characteristics. The men were stratified according to whether they reported having a regular doctor.

RESULTS

Of 467 men, 32% reported a regular doctor. These men were more likely to be older, to be better educated, and to state they would seek care for a medical problem at a doctor's office. The two groups did not differ in STD history or prostitute exposure; men without doctors were more likely to have urethritis and STD, although the men with doctors had substantial STD rates.

CONCLUSION

Public health clinics remain an important safety net for the management of STD, even for men who report a regular doctor.