 Fayraska aadka ugu eg Covid-19 ee loo yaqaanno Sars wuxuu dunida ku fiday sanadkii 2003-dii, si deg deg ah ayaana loo joojiyay, taasoo micnaheedu yahay inay yartahay xogta laga ogyahay inuu ku xirnaa xilliyada kala duwan ee cimilada sanadka. 