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'syndrome': [16], 'coronavirus': [17, 42], '2': [18], '(SARS-CoV-2)': [19], 'in': [20, 28, 49, 112, 155, 204, 236, 319, 349, 356], 'subpopulations': [21], 'at': [22, 351], 'high': [23, 52, 115, 354], 'risk,': [24], 'like': [25], 'older': [26], 'adults': [27], 'nursing': [29], 'homes': [30], '(NH).': [31], '<b><i>Objective:</i></b>': [32], 'The': [33, 104], 'objective': [34], 'study': [37], 'was': [38, 107, 138, 200, 286], 'to': [39, 79, 108], 'know': [40], 'disease': [43, 337], '2019': [44], '(COVID-19)': [45], 'outbreaks': [46, 69, 110], 'occur': [48, 318], 'NH': [50, 65, 113, 176, 320, 350], 'with': [51, 114, 244], 'coverage': [54], 'among': [55, 222, 229], 'its': [56], 'residents.': [57, 328], '<b><i>Methods:</i></b>': [58], 'We': [59, 173], 'identified,': [60], 'using': [61, 82], 'national': [62], 'professional': [63], 'networks,': [64], 'that': [66], 'suffered': [67], 'COVID-19': [68, 132, 274], 'despite': [70, 321], 'having': [71], 'completed': [72], 'a': [73, 141, 156, 325], 'campaign,': [75], 'and': [76, 95, 99, 164, 225, 265, 301, 314, 338, 341], 'asked': [77], 'them': [78], 'send': [80], 'data,': [81, 187], 'predefined': [83], 'collecting': [84], 'forms,': [85], 'on': [86], 'number': [88], 'residents': [90, 148, 190, 224], 'exposed,': [91], 'their': [92], 'status': [94], 'number,': [97], 'characteristics,': [98], 'evolution': [100], 'patients': [102, 263], 'infected.': [103], 'main': [105], 'outcome': [106], 'identify': [109], 'occurring': [111], 'vaccine': [116, 165, 202, 281], 'coverage.': [117], 'Secondary': [118], 'outcomes': [119], 'were': [120, 149, 170, 208, 218], 'residents’': [121], 'risk': [122], 'being': [124], 'infected,': [125], 'developing': [126], 'disease,': [128, 300], 'or': [129], 'dying': [130], 'from': [131, 273], 'during': [133, 167, 180, 283], 'outbreak.': [135], 'SARS-CoV-2': [136, 212, 293, 345], 'infection': [137], 'defined': [139], 'by': [140], 'positive': [142], 'reverse': [143], 'transcriptase-polymerase': [144], 'chain': 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'9.5%–29.2%)': [228], 'vaccinated': [231, 250, 269], 'ones.': [232], 'Severe': [233], 'developed': [235], '42': [237], '80': [239], '(52.5%)': [240], 'patients,': [242], 'compared': [243], '56': [245], '248': [247], '(22.6%)': [248], 'ones': [251, 270], '(relative': [252], 'risks': [253], '[RR]': [254], '4.17,': [255], '95%': [256, 277], 'CI:': [257, 278, 289], '2.43–7.17).': [258], 'Twenty': [259], '(25.0%)': [264], '16': [266], '(6.5%)': [271], 'died': [272], '(RR': [275], '5.11,': [276], '2.49–10.5).': [279], 'Estimated': [280], '34.5%': [287], '(95%': [288], '18.5–47.3)': [290], 'for': [291, 297, 304, 334, 344], 'preventing': [292, 298, 305, 335], 'infection,': [294], '71.8%': [295], '(58.8–80.7)': [296], '83.1%': [302], '(67.8–91.1)': [303], 'death.': [306, 339], '<b><i>Conclusions:</i></b>': [307], 'Outbreaks': [308], 'COVID-19,': [310], 'including': [311], 'deaths,': [315], 'still': [317], 'full': [322], 'majority': [326], 'Vaccine': [329], 'remains': [330], 'highly': [331], 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