A renowned vaccine expert developed life-altering ringing in his ears after his second shot. Now he’s calling for research into a possible link.

A man gets a Covid-19 vaccination shot at a clinic in San Antonio on Jan. 9. The CDC and drugmakers have investigated anecdotal reports of tinnitus following Covid vaccination but have found no cause-and-effect link.Nick Wagner / Xinhua News Agency via Getty Images file
https://www.nbcnews.com/health/health-news/tinnitus-rare-side-effect-covid-vaccines-rcna20613
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March 20, 2022, 5:47 AM PDT
It was the shock of a loud whistle that almost caused Gregory Poland to veer off the road as he was driving home after getting his second Covid-19 vaccine.
“It startled me,” said Poland,who is 66 years old.“I thought it was a dog whistle going off right next to me.”
It was not a dog whistle; it was a…
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