Less than 0.1% of fully vaccinated adults get severe COVID-19: CDC
COVID-19 vaccines dramatically reduce the risk of severe illness and death from the virus, according to a new study from the Centers for Disease Control and Prevention published Thursday.
The study looked at 1.2 million fully vaccinated adults who received either two shots of the Pfizer-BioNTech or Moderna vaccines or one shot of the Johnson & Johnson vaccine.
Just 0.18% of patients had breakthrough COVID-19 infections, and 0.015% developed serious illness that led to hospitalization, ICU admission, mechanical ventilation, intubation or death.
![](https://s.abcnews.com/images/Politics/vaccine-gty-er-220106_1641505145231_hpMain.jpg)
The small portion of people who did become seriously sick or die of COVID-19 after being vaccinated were primarily older adults, immunocompromised people or those living with multiple underlying medical conditions.
The study was conducted before the emergence of the omicron variant, which appears to more easily evade --- at least partially -- the protection offered by vaccines.
-ABC News' Sony Salzman