Delta is 'optimized for infecting humans,' but vaccines are the way out

Coronavirus variants are opening up a worrying new front in the pandemic, but one expert says vaccines can still beat the ever-changing threat.

April 15, 2025 · 1 min · 77 words · Bradley Fletcher

It really is a virus that seems to be optimized for infecting humans."

The delta variant is now thedominant strain in the US, accounting forroughly 80% of new cases.

[That’s] what we’ve seen with delta."

“We know what it takes to get a vaccine to work against COVID-19,” he says.

“There really is light at the end of the tunnel.

There really is a path forward.

you could check out the entire conversation in the video above.