This study utilized clinical and demographic data paired with Apple and Google mobility data to determine the efficacy of COVID-19 control measures used by the Vietnam Government. Vietnam’s effective containment of SARS-CoV-2 can be attributed to rapid government action and isolation of all contacts of known cases. The Vietnamese government sought to rapidly educate the public, close spaces of mass gathering, restrict international travel and impose strict quarantine, and implement case and contact tracing starting January 2020. 60% of cases in Vietnam were imported. Vietnam’s policy identified and isolated all direct contacts of COVID-19 cases regardless of symptoms for 14-days. This was particularly effective as most (43%) of those infected in Vietnam did not develop symptoms.