Chronicle reporters went to the Bay Area ZIP codes with the lowest vaccination rates and asked people why they hadn't gotten the shots. Reporter Julie Johnson tells host Demian Bulwa that people offered a mix of reasons, from lack of trust in medical authorities to belief in conspiracies, from laziness to lack of access. Plus: Reporter Ryan Kost digs into the plight of the immunocompromised as the delta variant surges. What are their lives like, and what are officials doing to help? | Unlimited Chronicle access: sfchronicle.com/pod

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