Soosaarida maqaalka Joornaalka ee Anne Kimball et al. oo cinwaankeedu yahay asymptomatic iyo presymptomatic SARS-CoV-2 infekshannada deganeyaasha xarun kalkaalin xirfadeed oo muddada-dheer - King County, Washington, Maarso 2020 ee ku taariikhaysan 3 Abriil 2020.