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. 2016 Feb 25;13:33. doi: 10.1186/s12985-016-0488-4

Fig. 1.

Fig. 1

Annual 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 shown