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Background Antibiotic resistance has become one of the most serious public health threats today. Used appropriately, newer rapid diagnostic methodologies have the potential to positively impact care by informing a more targeted treatment approach that can reduce inappropriate antibiotic use, support antimicrobial stewardship, shorten hospital stays, and improve clinical outcomes. Methods To improve ID specialists’ knowledge and application of rapid diagnostic tests, a CME/ABIM MOC/ACCENT certified curriculum was developed. The curriculum comprised a series of 4 educational episodes, each with a video commentary from a clinical expert and each focused on a different site of infection: (a) Episode 1: CNS; (b) Episode 2: Gastrointestinal tract; (c) Episode 3: Respiratory tract; and (d) Episode 4: Bloodstream. The episodes in the curriculum were launched in serial fashion between October 30, 2018 and February 11, 2019, on a website dedicated to continuous professional development. Educational effectiveness was assessed with a repeated-pairs pre-/post-assessment study design; each individual served as his/her own control. A chi-square test assessed changes pre- to post-assessment. P values of < 0.05 are statistically significant. Effect sizes were evaluated using Cramer’s V (<0.05 modest; 0.06–0.15 noticeable effect; 0.16–0.26 considerable effect; >0.26 extensive effect). Results 15,092 HCPs, including 10,894 physicians have participated in the curriculum. This initial analysis comprises data from the subset of ID specialists from each episode who answered all pre-/post-assessment questions through March 18, 2019; data collection is ongoing. Following participation, significant improvements were observed overall (P ≤ 0.002 for each episode) and on the specific topics assessed in each episode (Graph). Additionally, 51%–55% of ID specialists indicated an intent to modify their diagnostic approach and 15%–29% had increased confidence in applying the rapid diagnostic results into patient care. Conclusion This educational curriculum significantly improved ID specialists’ knowledge of the strengths and limitations of different rapid diagnostic methodologies and improved the applications of test findings into clinical decision-making. These findings highlight the positive impact of well-designed online education. Disclosures All authors: No reported disclosures.

1331. Interpretation and Application of Rapid Diagnostic Methodologies: The Positive Impact of Online, Curriculum-Based Learning