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Dogs are reservoir hosts for Leishmania infantum, a protozoan parasite transmitted by phlebotomine sand flies. The anti‐feeding and fast‐killing efficacy of Scalibor® deltamethrin collars against experimental Phlebotomus perniciosus challenges on dogs was determined over 1 year. Two groups of 8 dogs each were fitted with placebo (control) or deltamethrin collars (treated) on Day 0 and exposed to sand flies approximately every 28 days up to Day 364. After each exposure, anti‐feeding and fast‐killing efficacy rates were determined by comparing blood‐fed or live insects, respectively, in the treated vs. the control group. Blood‐fed and live sand flies were significantly less in treated dogs as compared to control dogs at each assessment. The anti‐feeding efficacy rate exceeded 90% except on Day 337 (89%) but increased again (96%) on Day 364. Fast killing efficacy was <74% over the study when considering all flies. However, this value increased cumulatively to 98% when only blood‐fed flies were compared between groups. Scalibor® collars are highly effective at preventing P. perniciosus blood‐feeding and in fast‐killing flies taking a blood meal for up to 1 year after application. These strong and long‐lasting effects are an important strategic component for L. infantum transmission control. [ABSTRACT FROM AUTHOR]

Copyright of Annales Françaises de Médecine d'Urgence is the property of John Libbey Eurotext Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Annales Françaises de Médecine d'Urgence is the property of John Libbey Eurotext Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Kevin Bray,1 Kaitlin Burge,1 Om Patel,1 Ishant Yadav,1 William Haynes,1 Nicholas Van Wagoner,2 Charles A Khoury3 1Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA; 2Division of Infectious Diseases, University of Alabama at Birmingham, Birmingham, AL, USA; 3Department of Emergency Medicine, University of Alabama at Birmingham, Birmingham, AL, USACorrespondence: Kevin Bray, Email kevbray@uab.eduBackground: Beginning January 26th, 2022, the National Board of Medical Examiners transitioned scoring of the United States Medical Licensing Examination (USMLE) Step 1 from a 3-digit score to pass/fail. In the past, the Step 1 score has been weighted heavily by program directors (PDs) as one of the most important metrics when assessing medical student’s competitiveness.Objective: The objective of this study was to evaluate the perceptions of emergency medicine (EM) PDs on the transition to a pass/fail USMLE Step 1 exam, and to elicit the opinions of EM PDs on the USMLE examinations’ ability to predict resident performance.Methods: A survey consisting of ranking and multiple-choice questions was sent to EM PDs. The multiple-choice questions were asked to determine EM PDs level of confidence in the ability of Step 1 and Step 2 Clinical Knowledge (CK) to predict a student’s ability to succeed in residency. The ranking questions focused on assessing each program’s current resident selection practices in comparison to expected selection criteria changes following a transition to pass/fail Step 1. R studio and MATLAB were used for statistical analysis, and a P value < 0.05 was considered significant.Results: The survey was completed by 57 (20.21%) EM PDs. When asked if Step 1 and Step 2 CK are accurate predictors of a resident’s ability to perform clinically within EM, only 10.5% of PDs answered ‘yes’ to Step 1 being predictive, compared to 31.6% for Step 2 CK. Regarding selection criteria, the top quartile of attributes (standardized letters of evaluation [1st], away rotations [2nd], clerkship grades [3rd] and Step 2 CK score [4th]) remained the same following the transition.Conclusion: Our results indicate that the top quartile of attributes might remain the same, despite most PDs agreeing that Step 2 CK is a better predictor of a resident’s performance.Keywords: USMLE, NBME, Step 1, Step 2, emergency medicine, residency, program director, medical student

Dogs are the reservoir host of zoonotic visceral leishmaniasis (VL) caused by Leishmania infantum (Kinetoplastida: Trypanosomatidae). Both subclinically‐infected and sick animals can be infectious to competent phlebotomine vectors. The degree and duration of insecticidal efficacy of an oral dose of fluralaner (Bravecto®; Merck Animal Health) was determined in dogs exposed to bites of Phlebotomus perniciosus (Diptera: Psychodidae), a main Mediterranean vector of VL. Twelve dogs allocated to two groups of six animals each were included in a parallel‐group designed, negative‐controlled, randomized, blinded, single‐centre efficacy study. Group 2 was treated with fluralaner on day 0, and sand‐fly exposure of both groups was performed on days 1, 28 and 84. Viability of blood‐fed females was assessed up to 96 h after exposure and efficacy was measured as the survival rate of specimens fed on Group 2 versus those fed on Group 1. A mortality of 100% was recorded at 24 h in females fed on Group 2 at both days 1 and 28. Significant insecticidal efficacy was still observed on day 84, with > 50% mortality recorded by 48 h post blood meal in Group 2. Fluralaner treatment of dogs represents a promising and affordable method for reducing the pool of infected vectors in endemic settings of zoonotic VL. [ABSTRACT FROM AUTHOR]