![](https://ichef.bbci.co.uk/news/1024/branded_news/804B/production/_122234823_gauteng_gettyimages-1224906377.jpg)
But it’s based on very small numbers and, as with adults, we generally cannot distinguish between children admitted because of Covid, and those discovered to have the virus after being admitted for something else, says Prof Helen Rees at the University of Witwatersrand in Johannesburg.