Acceptability of a Fentanyl Vaccine to Prevent Opioid Overdose and Need for Personalized Decision-Making.

BACKGROUND: The opioid epidemic worsened during the coronavirus disease 2019 (COVID-19) pandemic. Synthetic opioids (primarily fentanyl) comprise the most common drugs involved in overdose (OD) death. A vaccine that blocks fentanyl from reaching the brain to prevent OD is under development, and insight is needed into its acceptability. METHODS: Using a semi-structured interview guide, persons with opioid use disorder (OUD), family, professionals, and the public were interviewed about attitudes and concerns regarding a fentanyl vaccine. Reactions to fictional clinical vignettes of persons at risk of OUD because of pain and/or substance use histories were collected, analyzed, and quantified for favorability. Interviews were transcribed, coded, and analyzed thematically. RESULTS: Among N = 64 participants, (70.3% female, average age 32.4 years), attitudes were favorable toward a fentanyl vaccine, with preference for lifelong durability (76% of n = 55 asked). Perceived benefits centered on the potential for a life-saving intervention, suffering averted, healthcare dollars saved, and the utility of a passive harm reduction strategy. Concerns centered on uncertainty regarding vaccine safety, questions about efficacy, worry about implications for future pain management, stigma, and need for supportive counseling and guidance to personalize decision making. Reactions to vignettes revealed complex attitudes toward fentanyl vaccination when considering recipient age, health history, and future risks for addiction and pain. CONCLUSIONS: Positive responses to a fentanyl vaccine were found along with appreciation for the complexity of a vaccine strategy to prevent OD in the setting of pain and uncertain durability. Further research is needed to elucidate operational, ethical, and communications strategies to advance the model.

Definitive urine drug test findings in patients prescribed opioids for pain from a large national database.

OBJECTIVE: Clinicians and policymakers have been wrestling with the appropriateness and safety of opioid therapy during the opioid crisis. Policy and clinical decisions have often been made without much current data on trends in drug use in patients with pain. Thus, we evaluated definitive urine drug test (UDT) results in patients being treated for pain to see if those taking their prescribed opioids were less likely to be positive for the primary illicit drugs currently driving overdose deaths: cocaine, heroin, fentanyl, and methamphetamine. DESIGN, SETTING, AND PATIENTS: A cross-sectional study of UDT results from January 1, 2015 to September 30, 2021, from 600,000 patient specimens submitted for testing by pain management specialists. INTERVENTIONS: UDT by liquid chromatography-tandem mass spectrometry as ordered by the treating clinician. MAIN OUTCOME MEASURES: Presence of other substances stratified by whether a patient's prescribed opioid was found. RESULTS: The presence of cocaine, heroin, fentanyl, and methamphetamine for the total population was low (<5 percent). Of the 347,092 patients prescribed opioids, 76 percent (n = 264,961) were positive on UDT for their prescribed opioid ("consistent"). Compared to patients without their prescribed opioid present ("inconsistent"), patients consistent with therapy were 54 percent (incidence rate ratio (IRR) 1.54, 95 percent confidence interval (CI) 1.47-1.59) less likely to be positive for cocaine, 47 percent [IRR 1.47, 95 percent CI 1.34-1.57] less likely to be positive for heroin, and 35 percent [IRR 1.35, 95 percent CI 1.24-1.45] less likely to be positive for methamphetamine, p < 0.001. Differences between the groups for fentanyl were not significant. CONCLUSIONS: Overall positivity rates for cocaine, heroin, fentanyl, and methamphetamine were low. Patients with prescribed opioid present were less likely to be positive for cocaine, heroin, or methamphetamine. Patterns of substance use within this pain management population should be used to inform ongoing policy decisions.

Fatal fentanyl-associated cerebellitis in a young man.

A 22-year-old man was brought in by EMS for coma and respiratory failure. The initial diagnosis was an opioid overdose but the patient did not respond to naloxone. A head CT revealed findings consistent with cerebellitis. The patient developed obstructive hydrocephalus and herniation. Despite neurosurgical and ICU care, the patient did not recover. Cerebellitis is a seldom-discussed complication of opioid use which may become more common as the opioid and fentanyl epidemic evolves.

A Case of Phenibut Directed Detoxification Leading to Toxicity During the COVID-19 Pandemic.

BACKGROUND: Phenibut is a non-Food and Drug Administration-approved gamma-aminobutyric acid analog marketed in the United States as an anxiolytic, cognitive enhancer, and alcohol withdrawal treatment through online supplement vendors. In this case report, we describe a woman's self-directed detoxification with phenibut used to manage withdrawal symptoms from fentanyl and benzodiazepines in March 2020 during the height of the COVID-19 pandemic. CASE: A 38-year-old woman with severe opioid, benzodiazepine, gabapentin, stimulant use disorders developed altered mental status after oral phenibut ingestion intended to help self-manage opioid and benzodiazepine withdrawal. She chose self-directed detoxification as she feared COVID-19 exposure in detoxification facilities. Her altered mental status drove her to jump out a third-story window causing multiple spinal fractures. After a long hospitalization, she self-directed her discharge home due to concerns about COVID-19. Her premature discharge disrupted opioid and benzodiazepine use disorder treatment plans. CONCLUSION: This case highlights the risks of phenibut use for selfdirected detoxification. With COVID-19 related changes in the drug supply, people may be more likely to use online pharmaceuticals, therefore, substance use assessments should inquire about the online acquisition of new psychoactive drugs. Public health messaging regarding the risks of infectious disease transmission in addiction care settings is needed to guide addiction treatment choices among people who use substances.

HIV Risk Among Urban and Suburban People Who Inject Drugs: Elevated Risk Among Fentanyl and Cocaine Injectors in Maryland.

Drug overdose remains a leading cause of death in the US, with growing rates attributable to illicit fentanyl use. Recent HIV outbreaks among people who inject drugs (PWID) and service disruptions from COVID-19 have renewed concerns on HIV resurgence. We examined the relationship between fentanyl use and three injection-related HIV risk behaviors among PWID in Baltimore City (BC) and Anne Arundel Country (AAC), Maryland. PWID (N = 283) were recruited to the study through targeted sampling at street-based locations in BC and AAC from July 2018 to March 2020. Receptive syringe sharing (RSS) [adjusted odds ratio (AOR): 2.8, 95% confidence interval (CI): 1.2-6.3] and daily injecting (AOR: 1.9, 95% CI: 1.0-3.6) were associated with injecting fentanyl and cocaine together. Fentanyl availability and COVID-19 bring new HIV prevention challenges, particularly among those who inject fentanyl with cocaine, highlighting the importance to expand and sustain harm reduction, prevention, and treatment services for PWID to reduce HIV and overdose burden.

New Psychoactive Substances consumption and their monito- ring during Covid-19 pandemic.

ABSTRACT: Currently, the world is facing an unprecedent change of everyday life, due to the Covid-19 pandemic that has been affecting all the nations for more than one year. The public health systems were restructured in all the countries as a response to the constant emergency status, ne-glecting some services like toxicological analyses. In this scenario, the current spread of the New Psychoactive Substances is less controlled than before and the data on its expected mutation come from seizures analyses. Where the global distribution of drugs of abuse was affected by the restriction, fentanyl seizures did not drop during the pandemic. Moreover, new synthesis of fentanyl analogues resulted in new toxic adulterants as by products. Furthermore, diversion of benzodiazepines and new designer benzodiazepines were reported during the pandemic period. In this scenario, the scientific community and the international agencies should tighten their collaboration in order to monitor the emerging of new unknown substances.

Increased HIV testing in people who use drugs hospitalized in the first wave of the COVID-19 pandemic.

People who use drugs (PWUD) often experience barriers to preventative health care. During the COVID-19 pandemic, due to lapses in harm reduction services, several public health experts forecasted subsequent increases in diagnosis of HIV in PWUD. As many inpatient hospitals reworked patient flow during the COVID-19 surge, we hypothesized that HIV testing in PWUD would decrease. To answer this question, we compiled a deidentified list of hospitalized patients with electronic medical record indicators of substance use-a positive urine toxicology screen, prescribed medications to treat opioid use disorder, a positive CIWA score, or a positive CAGE score-admitted between January, 2020 and August, 2020. The outcome of interest was HIV test completion during inpatient hospitalization. The study used logistic regression to examine associations between type of substance use and receipt of HIV test. The study grouped substance use type into four groups (1) opioids (oxycodone, fentanyl, or other opiates) or opioid use disorder treatments (methadone, buprenorphine, naltrexone); (2) stimulant use (cocaine or amphetamines); (3) alcohol use (presence of a positive CAGE or CIWA score or alcohol present on toxicology screen); and (4) benzodiazepine use (benzodiazepines present on toxicology screen). The proportion of PWUD who were tested for HIV increased from 10.4% in January, 2020 to 28.2% in April, 2020 and back down to 12% in August. Notably, there was an inverse trend over time for number of people hospitalized with drug use, from 259 in January to a nadir of 85 in April, and then up to 217 in August, 2020. Contrary to our hypothesis, HIV testing increased during the COVID-19 pandemic, and we discuss explanations for this finding. The decrease in HIV testing post-pandemic peak is a reminder that we must work to develop interventions that lead to sustained high rates of HIV testing for all people, and especially for PWUD.