Good news from a neighboring country, Cambodia. There appears to be NO quarantine requirement, but there is a health certificate and health insurance requirement.
* Edit* further articles appear that there is a 14 quarantine
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TLDR : Answer Summary
Cambodia has lifted entry bans for travelers from six countries due to the easing of COVID-19 restrictions, but new requirements include a negative COVID-19 medical certificate issued no more than 72 hours before travel and proof of health insurance coverage. Upon arrival, travelers will need to take an additional COVID-19 test and may face a 14-day quarantine depending on the test results. While some view this as a step in the right direction for tourism, many express concerns about the ongoing quarantine requirements and their potential impact on travel. Discussions reveal frustrations over the logic behind needing a test both before flying and upon arrival.