Vietnam has suspended visa waivers, issuing of visas and the entry into Vietnam for all foreign nationals. There are a very small number of exceptions for diplomats on official business and certain high-skilled workers. These will be processed on a case by case basis. Such applications are required to be led by Vietnamese employers who must work directly through individual provincial government offices. The requirements and process may differ from province to province. The costs of quarantine, both in government centres and designated hotels, must be paid by those arriving or their employers.
Children under the age of 2 are exempt from presenting a COVID-19 test.
Travelers with proof of recovery from the virus within the last 90 days prior to boarding. Proof of a recent positive viral test and a letter from your healthcare provider or a public health official stating that you were cleared to travel.
More info at the CDC site
Travelers who did not get tested, are advised to stay home and self-quarantine for 10 days after travel.
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