San Francisco kept its kids out of public school for over a year during the pandemic lockdown, the longest of anywhere in the US. Now, doctors are exploring the possibility that this may have contributed to a spike in childhood RSV hospital cases in late 2022 and early 2023. 

KCBS Radio news anchor Holly Quan has more on the phenomenon known as "immune debt".

<p>San Francisco kept its kids out of public school for over a year during the pandemic lockdown, the longest of anywhere in the US. Now, doctors are exploring the possibility that this may have contributed to a spike in childhood RSV hospital cases in late 2022 and early 2023. </p>
<p>KCBS Radio news anchor Holly Quan has more on the phenomenon known as "immune debt".</p>

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