International Journal of Preventive Medicine (Int J Prev Med)2008-78021462023073028312831ENPrivate Academic Consultant, BangkokDr DY Patil University, Pune, Maharashtra, India & Visiting Professor, Hainan Medical University, Haikou20230722Dear Editor, COVID‑19 is still a global challenge to be managed. This infection has caused worldwide crises resulting in more than 104 million infected persons worldwide. As disease containment depends on several factors, a strict regimen for disease controlling and surveillance is necessary. For controlling the outbreak, case identification is needed. When there is a newly detected case, identification of at‑risk persons in contact with the patient is needed and it might be sometimes difficult.http://ijpm.mui.ac.ir/index.php/ijpm/article/view/2831http://ijpm.mui.ac.ir/index.php/ijpm/article/download/2831/717718714