<en-note>
  <h1 style="box-sizing:inherit;font-family:&quot;Guardian TextSans Web&quot;, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif;margin-top:0.2em;margin-bottom:0.35em;font-size:2.125em;font-weight:600;line-height:1.3;">Association Between mRNA Vaccination and COVID-19 Hospitalization and Disease Severity</h1>
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