A respiratory virus called RSV has a lot of kids in critical condition and hospitals overwhelmed. Vox public health reporter and epidemiologist Keren Landman explains newfound hope for a vaccine.

This episode was produced by Victoria Chamberlin, edited by Matt Collette, fact-checked by Laura Bullard, engineered by Paul Robert Mounsey, and hosted by Sean Rameswaram.

Transcript at vox.com/todayexplained  

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