Shane Crotty and his team at the La Jolla Institute of Immunology have been studying viruses for a long time. We wanted to talk to him again.

He first joined our podcast in March when vaccines were first becoming available and we knew a lot less. Now, after a few months and a few major variants of the virus, we have new questions. Like, why is Delta so much worse? Is it OK to go to concerts and ball games? What’s the deal with booster shots? Crotty and host Scott Lewis get into it.

The post from March: voiceofsandiego.org/topics/news/bonus-podcast-its-all-a-race-interview-with-an-immunologist

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