Photo taken on March 19, 2020 shows a closed restaurant in Budapest, capital of Hungary. The Hungarian government declared a state of emergency to combat the COVID-19 outbreak on March 11. (Photo by Attila Volgyi/Xinhua)

Photo taken on March 19, 2020 shows the Fashion Street, one of the main tourist attractions in downtown Budapest, capital of Hungary. The Hungarian government declared a state of emergency to combat the COVID-19 outbreak on March 11. (Photo by Attila Volgyi/Xinhua)

Photo taken on March 19, 2020 shows an empty freezer of a supermarket in downtown Budapest, capital of Hungary. The Hungarian government declared a state of emergency to combat the COVID-19 outbreak on March 11. (Photo by Attila Volgyi/Xinhua)

Photo taken on March 19, 2020 shows an empty freezer of a supermarket in downtown Budapest, capital of Hungary. The Hungarian government declared a state of emergency to combat the COVID-19 outbreak on March 11. (Photo by Attila Volgyi/Xinhua)

Photo taken on March 19, 2020 shows a closed restaurant in Budapest, capital of Hungary. The Hungarian government declared a state of emergency to combat the COVID-19 outbreak on March 11. (Photo by Attila Volgyi/Xinhua)

Photo taken on March 19, 2020 shows Fishermen's Bastion, one of the main tourist attractions in Budapest, capital of Hungary. The Hungarian government declared a state of emergency to combat the COVID-19 outbreak on March 11. (Photo by Attila Volgyi/Xinhua)