Fig. 1From: Molecular epidemiology and evolutionary histories of human coronavirus OC43 and HKU1 among patients with upper respiratory tract infections in Kuala Lumpur, MalaysiaAnnual distribution of HCoV-OC43 and HCoV-HKU1 among adults with acute in Malaysia. The monthly detection of HCoV-OC43 and HCoV-HKU1 (right axis, in bars) and the total number of nasopharyngeal swabs screened (left axis, in solid line) between March 2012 and February 2013 were shownBack to article page