As of May 22, 2020, the ban on the citizens of the EU and Schengen countries (including the Holy Republic of San Marino, the Principality of Andorra, the Principality of Monaco and the Vatican City State) to enter the territory of Bulgaria is no longer valid.
DECLARATION FOR TRAVELING AT OWN RISK
The Bulgarian Ministry of Health has information for citizens and medical professionals on its website at http://www.mh.government.bg/bg/informaciya-za-grazhdani/informaciya-otnosno-noviya-koronavirus-2019-ncov/ (Bulgarian only)
The Bulgarian government has created an United Information Portal for COVID-19 in Bulgaria: https://coronavirus.bg/ (Bulgarian only)
European Centre for Disease Prevention and Control
Ministry of Tourism of the Republic of Bulgaria: http://www.tourism.government.bg/bg/kategorii/covid-19