Triplets diagnosed with Covid-19 after birth. Experts investigate why

Experts are researching a set of premature babies who tested positive for coronavirus after birth in San Luis Potosí, Mexico. Dr. Tanya Altmann tells CNN's Brianna Keilar more.

Triplets diagnosed with Covid-19 after birth. Experts investigate why
Experts are researching a set of premature babies who tested positive for coronavirus after birth in San Luis Potosí, Mexico. Dr. Tanya Altmann tells CNN's Brianna Keilar more.