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China has approved the first nasal Covid vaccine inhaled up the nose. James Gallagher, BBC Health and Science correspondent explains how a sniffed vaccine primes the immune system. \\nPlus Claudia hears about the health consequences of a ban on abortion in some US states for young women who develop a breast cancer diagnosis during pregnancy. Professor Virginia Borges and Assistant Professor Nicole Christian from the University of Colorado explain the difficult decisions women are having to make. \\nAnd resolution of the mystery pneumonia identified in Argentina.

Presenter: Claudia Hammond\\nProducer: Erika Wright

(Picture: Coronavirus image. Credit: fotograzia / Getty Images)