According to researchers at the University of Colorado Anschutz Medical Campus, pregnant women who take extra choline supplements may mitigate the negative impact that viral respiratory infections, including COVID-19, can have on babies. Choline is a vitamin B nutrient found in a variety of foods and supplements, and supports fetal brain development.
https://www.nutraceuticalsworld.com/contents/view_breaking-news/2020-06-02/u-of-colorado-study-recommends-choline-use-for-pregnant-mothers-during-covid-19-pandemic