The inclusion of Vietnam on these lists always surprises me. There is no excess mortality data for Vietnam, nor any data on infections (e.g. from random population sampling). All we have is their self-reported number of cases (i.e.
confirmed infections) and deaths (zero!), which come from triumphant news releases from the Communist Party (usually paired with reminders about how great this success will be for their economy in the post-COVID world), repeated with zero critical thought by overseas media.
- Nobody knows if there was some excess mortality here, because there's no monitoring.
- There were thousands of "suspected cases" in the official reports, which remained suspected cases and never progressed to a confirmed case or a confirmed non-case (as they would if they were tested) until they stopped reporting numbers.
- People with confirmed close contact with known cases were told to isolate and were only tested if they showed symptoms (this is also normal practice in many/most Western countries).
- The supposed "large" number of tests carried out in Vietnam represents only 0.2% of the population.
- A significant portion of those tests are of people who had to be tested anyway, rather than community testing (e.g. overseas Vietnamese arriving home; the large number of charter flights that were allowed as exceptions from Korea and other countries, for employees of large firms with factories in Vietnam - e.g. LG - who did not stop during the lockdown).
- The lockdown was largely not enforced, and while streets were much quieter than usual, there were many people outside throughout. Smaller bars and restaurants only closed for a few weeks, and of course nobody wore a mask inside them. Many informal businesses (e.g. street food) never closed.
I think Vietnam's "success" is largely down to some environmental factor (average temperature/humidity, sunlight exposure, the general "outdoor" way most people socialise) keeping the number of infections or the severity of those infections down, and I think the chances that COVID caused exactly zero deaths are almost zero.