AdvertisementWhy hasn't my daughter caught COVID? 2 factors likely protect her — and maybe you tooPlay03:40Download AudioApril 07, 2022Michaeleen DouclefffacebookEmailRosy, 6, gives COVID tests and vaccines to her stuffed animals. She herself has been exposed to SARS-CoV-2, the coronavirus that causes COVID-19, multiple times and never tested positive. What's her secret? (Michaeleen Doucleff/NPR)
