Findings on multiple episodes, number and duration of ENL episodes.

†Only cases with multiple episodes of ENL reported, this accounted for 28.4% of MB cases. This study is excluded from the calculations.
‡49 (45%)single, 27 (25%) two, 13 (12%) three, 6 (5%)four, 2 (2%) five, 5 (5%) >five episodes.
§45(49%) single, 28 (30%)two, 14 (11%) three, 5 (5%) four or more episodes.
**Of the original cohort of 116 patients, 28 were excluded because they had too short follow-up and could not be categorized.
††37.5% having acute multiple ENL (i.e. more than one episode lasting less than six months, steady decrease in steroid tapering) and 62.5% chronic ENL (i.e. episode lasting for more than six months).
‡‡13 (25%)single, 12 (24%)two, 14 (27%)three, 11(22%)four, 1(2%)five episodes.
§§Vaccine versus control group; 3 vs 3 single, 4 vs 4 two, 3 vs 2 three, 0 vs 3 more than three episodes.
***An episode of ENL was taken as a separate event if more than 3 months had elapsed since the last episode.

† 仅纳入报告存在多次发作的结节性红斑样麻风（Erythema Nodosum Leprosum, ENL）病例，此类病例占多菌型麻风（Multibacillary leprosy, MB）病例的28.4%。本研究未将该部分纳入计算。
‡ 49例（45%）为单次发作，27例（25%）为2次发作，13例（12%）为3次发作，6例（5%）为4次发作，2例（2%）为5次发作，5例（5%）为5次以上发作。
§ 45例（49%）为单次发作，28例（30%）为2次发作，14例（11%）为3次发作，5例（5%）为4次及以上发作。
** 原始队列共116例患者，其中28例因随访时长过短无法完成分类而被排除。
†† 37.5%为急性多发性ENL（即发作次数≥2次，单次发作时长不足6个月，且激素减量过程平稳），62.5%为慢性ENL（即单次发作时长超过6个月）。
‡‡ 13例（25%）为单次发作，12例（24%）为2次发作，14例（27%）为3次发作，11例（22%）为4次发作，1例（2%）为5次发作。
§§ 疫苗组与对照组情况：单次发作者分别为3例 vs 3例，2次发作者分别为4例 vs 4例，3次发作者分别为3例 vs 2例，3次以上发作者分别为0例 vs 3例。
*** 若两次ENL发作间隔超过3个月，则将其视为独立的发作事件。