Japan further tightened border controls for travelers from mainland China on Sunday, requiring proof of a negative COVID-19 test amid a surge of cases in the neighboring country.Since September 2022, travelers from abroad who have been vaccinated at least three times did not need to take coronavirus tests within 72 hours of departure to prove they are not infected.However, people arriving from mainland China are now required to present proof of a negative COVID test taken within 72 hours of departure. The new requirement does not apply to those flying in from Hong Kong or Macau.In addition,…READ FULL ARTICLE