CDC Director: ‘Concerning Evidence’ Shows COVID-19 Vaccine Effectiveness Is ‘Waning’ Against Delta Variant

Dr. Rochelle Walensky, the head of the Centers for Disease Control and Prevention (CDC), said Wednesday that data sourced from Israel on COVID-19 vaccines shows that the efficacy of the shots has dropped among individuals who received their vaccines early on. Citing three articles that were released by the CDC’s Morbidity and Mortality Weekly Report, Walensky said that the vaccines’ efficacy decreases over time in preventing infection. Although protection against death and hospitalization is “holding up well,” the COVID-19 vaccines’ effectiveness is “waning” in even preventing severe illness or death, she added. “Even though our vaccines are currently working well to prevent hospitalizations, we are seeing concerning evidence of waning vaccine effectiveness over time and against the Delta variant,” Walensky said during a news conference in explaining why federal officials are now recommending that booster shots be given to Americans eight months after they’ve been vaccinated with the Pfizer or Moderna …Read More

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