On the "CBS News Weekend Roundup," Covid kids, Ukraine and retirees. Host Allison Keyes gets the latest from CBS News Medical Contributor Dr. David Agus about Moderna's effort to get authorization for Covid-19 vaccines for kids under the age of 6. We'll hear about President Biden's latest request for aid for Ukraine, and about how retirees are handling skyrocketing inflation. In the Kaleidoscope, Allison speaks with Kanika Harris at the non-profit Black Women's Health Imperative about the pandemic and Black maternal mortality. Stay tuned for these stories and more!