COVID question 😬

How many mamas have had a newborn and tested positive? Also, how many mamas have had a newborn who also tested positive? What were their symptoms? How sick were they?

I have a two week old babygirl. My sister, who has been around her off and on the last two weeks, told me tonight she’s quarantining with Covid. She was last around my girl 4 days ago. I’m not at all worried about myself with COVID because I’m nice and healthy, but I’m worried about my baby who is so little and has relatively no immune system catching it. I have no idea what COVID symptoms look like in a newborn and I can’t seem to find much info on it... I am both breastfeeding and supplementing when needed, so I hope that somehow helps her. 🤷🏼‍♀️

Thoughts? Advice? Any help is appreciated!