Britain's Prime Minister Boris Johnson speaks during filming of his address to the nation from No 10 Downing Street following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 10, 2020. [Photo/Agencies]

A man wearing a protective face mask jogs along Paseo de la Castellana avenue after Madrid's local authorities allowed some streets only for pedestrian use during weekends and festivity days amid the coronavirus disease (COVID-19) outbreak in Madrid, Spain, May 9, 2020. [Photo/Agencies]

French hairdresser Marc Mauny tends to his first customer during the re-opening of Marc Creations hair salon at midnight in Mayenne, as France softens its strict lockdown rules during the outbreak of the coronavirus disease (COVID-19), May 11, 2020. [Photo/Agencies]