"this 'vaccine' is going to work, oh well maybe it will wear off"

CDC Dir. Rochelle Walensky Recalls Learning About the COVID Vaccine's Efficacy from CNN & Jokes About It Wearing Off
“Nobody said waning…'this vaccine is going to work [laughs] oh well maybe it will wear off'. Nobody said well what if it’s not as potent against the next variant.”
This Jewish woman has become the face of America's fight against COVID
No. 3 on The Jerusalem Post's Top 50 Most Influential Jews of 2021: US director of the Centers for Disease Control and Prevention (CDC) Dr. Rochelle Walensky. https://www.jpost.com/50-most-influential-jews/rochelle-p-walensky-678108

Covid-19 variants pose 'real threat' to vaccine progress, CDC warns..
The spread of highly contagious coronavirus variants is threatening to fuel a "potential fourth surge of cases" in the US, a top health official has warned.

The head of the US Centers for Disease Control and Prevention (CDC) said she was concerned by recent Covid-19 data.

Dr Rochelle Walensky said about 70,000 new cases a day had been recorded last week - "a very high number".
There were nearly 2,000 deaths a day in the same period, she added.
https://www.bbc.co.uk/news/world-us-canada-56247656