Could it be time for another COVID booster shot? Vaccine makers are calling for it.

<div class="c-message_kit__gutter"> <div class="c-message_kit__gutter__right" role="presentation" data-qa="message_content"> <div class="c-message_kit__blocks c-message_kit__blocks--rich_text"> <div class="c-message__message_blocks c-message__message_blocks--rich_text" data-qa="message-text"> <div class="p-block_kit_renderer" data-qa="block-kit-renderer"> <div class="p-block_kit_renderer__block_wrapper p-block_kit_renderer__block_wrapper--first"> <div class="p-rich_text_block" dir="auto"> <div class="p-rich_text_section">Moderna is asking the Food and Drug Administration for emergency authorization of a second COVID booster shot. Pfizer also asked for authorization of a second shot earlier this week, although it would be for a more narrow range of the population. Christopher Low is here to deliver insights on today&#8217;s market activity. We also take a snapshot of the existing homes market as mortgage rates climb.</div> </div> <div> <p class="p1"><span class="s1">Keep independent journalism going strong. <a href="https://support.marketplace.org/mkp-mmr-sn"><span class="s2"><i>Give today to support Marketplace Morning Report.</i></span></a> </span></p> </div> </div> </div> </div> </div> </div> </div>