Treatment of sexually transmitted infections with single-dose therapy: a double-edged sword

Chlamydia Treatment Practices and Time to Treatment in Massachusetts: Directly Observed Therapy Versus Pharmacy Prescriptions

Background

Directly observed therapy (DOT) is recommended for the treatment of chlamydia, however pharmacy prescriptions are frequently used. Adherence to DOT and the association between treatment method and time to treatment is unknown.

Methods

We conducted a retrospective review of a randomized 2% of laboratory-confirmed chlamydia infections reported to the Massachusetts Department of Public Health from January 1, 2019 to May 31, 2019. Clinicians and pharmacies were contacted to ascertain treatment methods and timing. We assessed frequency of DOT and pharmacy prescriptions in the treatment of chlamydia infection in Massachusetts. We used log rank test to compare time to treatment initiation for patients receiving DOT versus pharmacy prescriptions. Data were stratified according to whether treatment was empiric or laboratory-driven.

Key results

We ascertained full outcomes for 199 patients. Eighty patients received DOT and 119 patients received pharmacy prescriptions. DOT was more common among those receiving empiric treatment and pharmacy prescriptions were more common among those receiving laboratory-driven treatment. The median time to treatment was 1.5 days for patients treated with DOT and 3 days for those treated with pharmacy prescriptions. For both groups, the median time to treatment for empiric therapy was 0 days and for laboratory-driven therapy was 4 days. The differences in time to treatment were not statistically significant.

Conclusions

Pharmacy prescriptions are frequently used for the treatment of chlamydia in Massachusetts. We did not observe a significant difference in the time to treatment between DOT and pharmacy prescriptions.

Gaps in Chlamydia Treatment Within California Family Planning Clinics: Are Patients Filling Prescriptions?

BACKGROUND

Compared with receiving medication dispensed in a health center, patients receiving prescriptions must take additional steps for treatment. Few clinics have protocols for ensuring prescriptions are filled. This study evaluated prescription fill rates for chlamydia treatment based on claims data in California Title X clinics and examined fill rates by patient demographics and clinic type.

METHODS

We collected treatment information during Title X site audits for a convenience sample of patients with a positive chlamydia test between January 2008 and March 2013. We categorized patients as receiving treatment on-site versus via prescription and matched prescriptions to pharmacy billing claims within 90 days of test date. We examined treatment rates by patient age, gender, and race/ethnicity, and by clinic type, and assessed the median time to treatment.

RESULTS

Among 790 patients diagnosed with chlamydia across 79 clinics, 65% (n = 513) were treated on-site and 33% (n = 260) via prescription; 17 (2%) did not have treatment information. Sixty-seven percent of prescriptions had confirmed receipt of treatment. Prescription fill rates were lower for patients age 18 years and younger (47% vs. 71%, P < 0.01) and for patients attending federally qualified health centers compared with stand-alone family planning clinics (63% vs. 88%, P < 0.01). Median time to treatment was similar for patients treated on-site (5 days) or via prescription (4 days).

CONCLUSIONS

Delays in chlamydia treatment increase risk of complications and ongoing transmission. Providing medications on-site can improve treatment rates, especially among younger patients. These insights can inform clinic treatment protocols and efforts to improve quality of chlamydia care.

High Resistance to Azithromycin in Clinical Samples from Patients with Sexually Transmitted Diseases in Guangxi Zhuang Autonomous Region, China

Azithromycin is used as an alternative medicine in patients with syphilis who are intolerant to penicillin. Nevertheless, the report of treatment failure of azithromycin for patients with syphilis has raised concerns in China in the past years. In this study, 178 patients with early syphilis, who were treated in sexually transmitted infections clinics in four cities in Guangxi Zhuang Autonomous Region were enrolled to investigate the regional prevalence of Treponema pallidum strain resistant to azithromycin. Nested PCR was performed to amplify the 23S ribosomal RNA (23SrRNA) gene. The point mutation of A2058G in 23SrRNA, which confers Treponema pallidum resistance to azithromycin, was measured by endonuclease digestion of PCR amplification products using MboII. A2058G point mutation was detected in 91.0% (162/178; 95% CI, 86.8%, 95.2%) of the specimens, but no difference in prevalence of azithromycin resistance was found between the patients who had taken antibiotics before enrollment and the patients who had not (91.8% vs. 89.4%), nor between the patients with and without past sexually transmitted infections (87.1% vs. 93.1%). We concluded that azithromycin may not be suitable for syphilis as a treatment option in Guangxi Zhuang Autonomous Region because of the extremely high prevalence of resistance in the general syphilis population.

Application of Safocid in clinical practice (review of the results of studies carried out in Russia)

This systematic review presents the data on using the Safocid complex drug for the treatment of a combination or unknown pathology of the urogenital tract as well as for the prevention of pre- and post-surgical complications in case of urologic and gynecologic interventions. According to the review of 39 articles, the authors of most of the publications assess the drug efficacy as high while the amount of adverse effects is minimum.

Chlamydia and gonorrhoea in pregnancy: effectiveness of diagnosis and treatment in Botswana

BACKGROUND

Millions of patients are prescribed drugs for sexually transmitted infections (STIs) in developing countries each year, yet the treatment effect of these prescriptions is largely unknown.

OBJECTIVES

To determine if the prescribing of erythromycin and ceftriaxone to pregnant women with STI symptoms leads to a reduction in the prevalence among these women of chlamydia and gonorrhoea, respectively.

METHODS

We compared the prevalence of chlamydia among 116 pregnant women who had been prescribed erythromycin for a history of STI symptoms in their current pregnancy with the prevalence in a control group of 557 pregnant women who had not been prescribed this drug. Similarly we compared the prevalence of gonorrhoea among 110 pregnant women who had and 561 women who had not been prescribed ceftriaxone.

RESULTS

There was no significant difference in the prevalence of chlamydia among the women who had and the women who had not been prescribed erythromycin four times daily for 10 days (7% v 8%). Contrarily, none of the women who had been prescribed a single dose of ceftriaxone had gonorrhoea, whereas 4% of the women who had not had this drug prescribed did have gonorrhoea.

CONCLUSIONS

The prescribing of erythromycin seems to have had a limited effect on chlamydia in this population, whereas the prescribing of ceftriaxone led to the curing of gonorrhoea. Ceftriaxone is provided as a single dose injection at the point of care, and the differential effectiveness between the two drugs may reflect low compliance with the complex erythromycin regimen. Interventions to increase compliance could improve cure rates. The use of a simpler drug regimen should be considered when low compliance is likely.

How, and how efficiently, can we treat Chlamydia trachomatis infections in women?

Several antichlamydial active drugs are available for both non-pregnant and pregnant women, potentially allowing effective prevention of the consequences and transmission of infection. The choice of treatment regimen not only has to consider efficacy, but also side-effects, compliance and the cost of antibiotic drugs. In recent years there have been no significant changes to the guidelines for treating Chlamydia trachomatis infection as no new antibiotic has been included. Inclusion of a new antichlamydial drug in the guidelines must be supported by suitable, randomized trials. Furthermore, how much it will be used in clinical practice will also depend on considerations of a pharmacoeconomic nature.