Kaisar, M.M.M., Kristin, H., Widowati, T.A., Rachel, C., Hengestu, A., Surja, S.S. and Ali, S. 2024. Tracing COVID-19 cluster during offline learning in the new era of pandemic. Journal of Community Service and Empowerment. 5, 1 (Feb. 2024), 155–162. DOI:https://doi.org/10.22219/jcse.v5i1.27945.