Professor Datuk Dr. Awang Bulgiba Awang Mahmud, Epidemiologist from the Faculty of Medicine, University of Malaya said more exhaustive efforts were needed due to high number of positive results during screening points to under-testing as many infected persons cannot be traced to any cluster and the rate of virus cannot be determined and their contacts likely to be tested.
Source: https://www.nst.com.my/news/nation/2021/06/696024/experts-we-dont-have-true-picture-outbreak