This is just cringeworthy

"“We didn’t see Delta coming. I think most scientists did not — upon whose advice and direction we have relied — didn’t see Delta coming,” she said. “We didn’t see Omicron coming. And that’s the nature of what this, this awful virus has been, which as it turns out, has mutations and variants.”"

I'm sure most scientists foresaw COVID variants. I know I did, and I'm neither a virologist nor an epidemiologist. As a geneticist, I'm a student of population biology and evolution. During a pandemic, viral populations are immense. Variation occurs with each generation, and the larger the population, the larger each generation and the higher the probability of variants that affect infection rates and/or virulence. The driver of evolution is selection acting upon natural variation. Thus, it was completely predictable that variants such as Delta and Omicron would appear, and will continue to appear until the pandemic abates.

https://www.latimes.com/politics/story/2021-12-17/kamala-harris-in-interview-says-administration-did-not-anticipate-omicron-variant