Wastewater Surveillance-"Messy" Science With Public Health Potential

Wastewater Surveillance for Xylazine in Kentucky

Introduction

In the U.S., xylazine, the veterinary non-opioid sedative, has emerged as a major threat to people who use illicitly manufactured fentanyl and other drugs. The aim of this study was to compare wastewater detection of xylazine with other public health and safety surveillance data from 2019 to 2023 in Kentucky.

Methods

Wastewater samples from 5 rest areas, 2 truck weigh stations, and 4 wastewater treatment plants were tested for xylazine. Wastewater xylazine positivity rates were compared with xylazine-positive submission rates from the National Forensic Laboratory Information System and Kentucky's fatal overdoses in 6-month periods (Period 1=January-June; Period 2=July-December).

Results

Xylazine was detected in 61.6% (424 of 688) of daily wastewater samples from roadway sites/wastewater treatment plants. For roadways, detection increased from 55% (Period 1, 2021) to 94% (Period 1, 2023), and wastewater treatment plants had an overall detection of 25.8% (n=66 samples, Periods 1 and 2, 2022). Increasing roadway positivity corresponded to trends in National Forensic Laboratory Information System xylazine-positive submission rates: from 0.19 per 1,000 submissions (Period 1, 2019) to 2.9 per 1,000 (Period 2, 2022, latest available). No deaths from xylazine were reported publicly in Kentucky, although this study's authors identified 1-4 deaths (true count suppressed) in the overdose surveillance system, which, in back-of-the-envelope comparisons with other states, is far fewer than expected.

Conclusions

Wastewater signals indicate broad geographic exposure to xylazine in Kentucky, yet health outcomes data suggest otherwise. These findings may inform regional, national, and international efforts to incorporate wastewater-based drug surveillance. Harm-reduction activities along roadways and other suitable locations may be needed.

Core components of an anti-racist approach among health professions educators: an integrative review

Objectives

This integrative literature review aimed to identify the core elements of an anti-racist approach among health professions educators.

Methods

We searched five databases CINAHL (EBSCOhost), ERIC (ProQuest Dissertations & Thesis Global), EMBASE (Ovid), MEDLINE (Ovid), and Web of Science (Social Sciences Citation Index, Citation Index Expanded) in March 2021. The search strategy combined concepts related to anti-racist pedagogies in the context of health professions education by educators in any capacity. From 1,755 results, we selected 249 manuscripts published in English or French between 2008 and 2021 based on titles and abstracts. After reviewing the full texts, we selected the 48 most relevant sources. We extracted data regarding knowledge, skills, and attitudes in reference to anti-racist approaches or surrogate terms. Within each category, we grouped similar data using a conceptual map.

Results

Analysis of the selected sources revealed that, for health professions educators, engaging in an anti-racist pedagogical approach requires more than incorporating racialized perspectives and content into the classroom. It rather rests on three interrelated components: developing a critical understanding of power relationships, moving toward a critical consciousness, and taking action at individual and organizational levels.

Conclusions

This review sheds light on knowledge, attitudes and skills that educators must deploy to adopt an anti-racist approach competently. This approach is a learned, intentional, and strategic effort in which health professions educators incorporate anti-racism into their teaching and apply anti-racist values to their various spheres of influence. This ongoing process strives for institutional and structural changes and requires whole-system actions.