<ul class="summary-list"><li>ER doctor Leana Wen says <keyword id="8763838" type="UNKNOWN" weightage="60" keywordseo="covid-19">COVID-19</keyword> cases are rising in the US because <keyword id="54639" type="ORGANIZATION" weightage="60" keywordseo="vaccination">vaccination</keyword> numbers are not high enough.</li><li>The <keyword id="11357594" type="UNKNOWN" weightage="60" keywordseo="delta-variant">Delta variant</keyword> of COVID-19 is 50% more contagious than the Alpha variant, which is 50% more contagious than the original variant.</li><li>She says people who got the Pfizer or Moderna vaccines are "extremely well protected from severe disease" with the Delta variant.</li></ul>

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We asked a prominent emergency physician about the Delta variant's risks for both vaccinated and unvaccinated people.

Emergency doctor explains how the Delta variant affects vaccinated people

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BusinessInsider

We asked Leana Wen, a prominent emergency physician, about the Delta variant's risks for both the vaccinated and unvaccinated.

Emergency doctor explains how the Delta variant affects vaccinated people

Kaitlyn Wang

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