![](http://www.ecns.cn/hd/2021/08/17/ecdc76a2116e44c7b5a6f0e5478b1b28.jpg)
Photo taken on Aug. 16, 2021 shows a sign on a restaurant door informing that only people vaccinated against COVID-19 can enter the restaurant in Skopje, North Macedonia. (Photo by Tomislav Georgiev/Xinhua)
![](http://www.ecns.cn/hd/2021/08/17/16978ac41ccd415aba828eb7b5087783.jpg)
A restaurant worker scans the QR code to check up the document confirming that the visitor has been vaccinated against COVID-19 in Skopje, North Macedonia, Aug. 16, 2021. (Photo by Tomislav Georgiev/Xinhua)
![](http://www.ecns.cn/hd/2021/08/17/d7fe164deb6646e48c560321f5bd0468.jpg)
People wait in line for restaurant workers to check up the document confirming that the visitor has been vaccinated against COVID-19 in Skopje, North Macedonia, Aug. 16, 2021. (Photo by Tomislav Georgiev/Xinhua)
![](http://www.ecns.cn/hd/2021/08/17/5fd43b9b6648476ba7f2e29adf423d1f.jpg)
People wait in line for restaurant workers to check up the document confirming that the visitor has been vaccinated against COVID-19 in Skopje, North Macedonia, Aug. 16, 2021. (Photo by Tomislav Georgiev/Xinhua)