Children are greeted with strict social distancing requirements at Stengaard School in Gladsaxe Kommune of Copenhagen region as daycares, kindergartens and elementary school of 0-5 grades reopened, in Copenhagen, Denmark, April 15, 2020. (Photo by David A.Williams/Xinhua)

Parents and children are greeted with strict social distancing requirements at Stengaard School in Gladsaxe Kommune of Copenhagen region as daycares, kindergartens and elementary school of 0-5 grades reopened, in Copenhagen, Denmark, April 15, 2020. (Photo by David A.Williams/Xinhua)