Worshippers wearing protective face masks and respecting social distancing attend a mass at the Basilica of Our Lady of Mercy, amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain, May 24, 2020. REUTERS/Nacho Doce

Worshippers wearing protective face masks and respecting social distancing attend a mass at the Basilica of Our Lady of Mercy, amid the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain, May 24, 2020. REUTERS/Nacho Doce

Women with children walk past St. Peter's Basilica as Pope Francis gives his weekly general audience virtually from a library inside the Vatican due to measures to contain the coronavirus disease (COVID-19), as seen from Rome, Italy May 20, 2020. REUTERS/Yara Nardi

A view shows the dome of St. Peter's Basilica as Pope Francis gives his weekly general audience virtually from a library inside the Vatican due to measures to contain the coronavirus disease (COVID-19), as seen from Rome, Italy May 20, 2020. REUTERS/Yara Nardi

A man has his temperature checked on the day of St Peter's Basilica's full reopening as the Vatican eases measures put in place during the coronavirus disease (COVID-19) outbreak, at the Vatican, May 18, 2020. REUTERS/Remo Casilli

A woman has her temperature checked on the day of St Peter's Basilica's full reopening as the Vatican eases measures put in place during the coronavirus disease (COVID-19) outbreak, at the Vatican, May 18, 2020. REUTERS/Remo Casilli

A Swiss Guard keeps watch on the day of St Peter's Basilica's full reopening as the Vatican eases measures put in place during the coronavirus disease (COVID-19) outbreak, at the Vatican, May 18, 2020. REUTERS/Remo Casilli

People wearing protective face masks are seen in St Peter's Basilica on the day of its full reopening as the Vatican eases measures put in place during the coronavirus disease (COVID-19) outbreak, at the Vatican, May 18, 2020. REUTERS/Remo Casilli

People pray in St Peter's Basilica on the day of its full reopening as the Vatican eases measures put in place during the coronavirus disease (COVID-19) outbreak, at the Vatican, May 18, 2020. REUTERS/Remo Casilli

A nun walks in St Peter's Basilica on the day of its full reopening as the Vatican eases measures put in place during the coronavirus disease (COVID-19) outbreak, at the Vatican, May 18, 2020. REUTERS/Remo Casilli

A tourist exits St Peter's Basilica on the day of its full reopening as the Vatican eases measures put in place during the coronavirus disease (COVID-19) outbreak, at the Vatican, May 18, 2020. REUTERS/Remo Casilli

Nuns walk on the day of St Peter's Basilica's full reopening as the Vatican eases measures put in place during the coronavirus disease (COVID-19) outbreak, at the Vatican, May 18, 2020. REUTERS/Remo Casilli

St Peter's Square is seen on the day of St Peter's Basilica's full reopening as the Vatican eases measures put in place during the coronavirus disease (COVID-19) outbreak, at the Vatican, May 18, 2020. REUTERS/Remo Casilli

A worker in a protective suit measures the temperature of a man on the day of St Peter's Basilica's full reopening as the Vatican eases measures put in place during the coronavirus disease (COVID-19) outbreak, at the Vatican, May 18, 2020. REUTERS/Remo Casilli

A man in a protective suit measures the temperature of a woman on the day of St Peter's Basilica's full reopening as the Vatican eases measures put in place during the coronavirus disease (COVID-19) outbreak, at the Vatican, May 18, 2020. REUTERS/Remo Casilli

A worker in a protective suit measures the temperature of a man on the day of St Peter's Basilica's full reopening as the Vatican eases measures put in place during the coronavirus disease (COVID-19) outbreak, at the Vatican, May 18, 2020. REUTERS/Remo Casilli

Police officers wearing protective face masks stand in front of St Peter's basilica on the day of its full reopening as the Vatican eases measures put in place during the coronavirus disease (COVID-19) outbreak, at the Vatican, May 18, 2020. REUTERS/Remo Casilli

A Vatican staff member in protective gear sanitises the interior of St. Peter's Basilica, as part of efforts to combat a spread of the coronavirus disease (COVID-19), at the Vatican, May 15, 2020. REUTERS/Yara Nardi

A Vatican staff member in protective gear sanitises the interior of St. Peter's Basilica, as part of efforts to combat a spread of the coronavirus disease (COVID-19), at the Vatican, May 15, 2020. REUTERS/Yara Nardi

Vatican staff members in protective gear sanitise the interior of St. Peter's Basilica, as part of efforts to combat a spread of the coronavirus disease (COVID-19), at the Vatican, May 15, 2020. REUTERS/Yara Nardi

A Vatican staff member in protective gear sanitises the interior of St. Peter's Basilica, as part of efforts to combat a spread of the coronavirus disease (COVID-19), at the Vatican, May 15, 2020. REUTERS/Yara Nardi

Vatican staff members in protective gear sanitise the interior of St. Peter's Basilica, as part of efforts to combat a spread of the coronavirus disease (COVID-19), at the Vatican, May 15, 2020. REUTERS/Yara Nardi

Vatican staff members in protective gear sanitise the interior of St. Peter's Basilica, as part of efforts to combat a spread of the coronavirus disease (COVID-19), at the Vatican, May 15, 2020. REUTERS/Yara Nardi

A Vatican staff member in protective gear sanitises the interior of St. Peter's Basilica, as part of efforts to combat a spread of the coronavirus disease (COVID-19), at the Vatican, May 15, 2020. REUTERS/Yara Nardi

A Vatican staff member in protective gear sanitises the interior of St. Peter's Basilica, as part of efforts to combat a spread of the coronavirus disease (COVID-19), at the Vatican, May 15, 2020. REUTERS/Yara Nardi

A Vatican staff member in protective gear sanitises the interior of St. Peter's Basilica, as part of efforts to combat a spread of the coronavirus disease (COVID-19), at the Vatican, May 15, 2020. REUTERS/Yara Nardi TPX IMAGES OF THE DAY

Vatican staff members in protective gear sanitise the interior of St. Peter's Basilica, as part of efforts to combat a spread of the coronavirus disease (COVID-19), at the Vatican, May 15, 2020. REUTERS/Yara Nardi

A Vatican staff member in protective gear sanitises the interior of St. Peter's Basilica, as part of efforts to combat a spread of the coronavirus disease (COVID-19), at the Vatican, May 15, 2020. REUTERS/Yara Nardi

A Vatican staff member in protective gear sanitises the interior of St. Peter's Basilica, as part of efforts to combat a spread of the coronavirus disease (COVID-19), at the Vatican, May 15, 2020. REUTERS/Yara Nardi

A man disinfects the Santa Maria in Trastevere Basilica, during the coronavirus disease (COVID-19) outbreak, in Rome, Italy, May 11, 2020. REUTERS/Remo Casilli

A man disinfects the Santa Maria in Trastevere Basilica, during the coronavirus disease (COVID-19) outbreak, in Rome, Italy, May 11, 2020. REUTERS/Remo Casilli

A man disinfects the Santa Maria in Trastevere Basilica, during the coronavirus disease (COVID-19) outbreak, in Rome, Italy, May 11, 2020. REUTERS/Remo Casilli

A man disinfects the Santa Maria in Trastevere Basilica, during the coronavirus disease (COVID-19) outbreak, in Rome, Italy, May 11, 2020. REUTERS/Remo Casilli

A man disinfects the Santa Maria in Trastevere Basilica, during the coronavirus disease (COVID-19) outbreak, in Rome, Italy, May 11, 2020. REUTERS/Remo Casilli TPX IMAGES OF THE DAY

A woman wearing a protective face mask sits among chairs put in place of the benches to maintain the social distancing in Basilica of Santa Maria in Trastevere, as from May 18 masses will be celebrated again in churches, amid the spread of the coronavirus disease (COVID-19), in Rome, Italy May 8, 2020. REUTERS/Remo Casilli

A view of the Basilica of Santa Maria in Trastevere as inside chairs are put in place of the benches to maintain the social distancing, as from May 18 masses will be celebrated again in churches, amid the spread of the coronavirus disease (COVID-19), in Rome, Italy May 8, 2020. REUTERS/Remo Casilli

Chairs are put in place of the benches in Basilica of Santa Maria in Trastevere to maintain the social distancing, as from May 18 masses will be celebrated again in churches, amid the spread of the coronavirus disease (COVID-19), in Rome, Italy May 8, 2020. REUTERS/Remo Casilli

Chairs are put in place of the benches in Basilica of Santa Maria in Trastevere to maintain the social distancing, as from May 18 masses will be celebrated again in churches, amid the spread of the coronavirus disease (COVID-19), in Rome, Italy May 8, 2020. REUTERS/Remo Casilli

Chairs are put in place of the benches in Basilica of Santa Maria in Trastevere to maintain the social distancing, as from May 18 masses will be celebrated again in churches, amid the spread of the coronavirus disease (COVID-19), in Rome, Italy May 8, 2020. REUTERS/Remo Casilli

Chairs are put in place of the benches in Basilica of Santa Maria in Trastevere to maintain the social distancing, as from May 18 masses will be celebrated again in churches, amid the spread of the coronavirus disease (COVID-19), in Rome, Italy May 8, 2020. REUTERS/Remo Casilli

Chairs are put in place of the benches in Basilica of Santa Maria in Trastevere to maintain the social distancing, as from May 18 masses will be celebrated again in churches, amid the spread of the coronavirus disease (COVID-19), in Rome, Italy May 8, 2020. REUTERS/Remo Casilli

Chairs are put in place of the benches in Basilica of Santa Maria in Trastevere to maintain the social distancing, as from May 18 masses will be celebrated again in churches, amid the spread of the coronavirus disease (COVID-19), in Rome, Italy May 8, 2020. REUTERS/Remo Casilli

Chairs are put in place of the benches in Basilica of Santa Maria in Trastevere to maintain the social distancing, as from May 18 masses will be celebrated again in churches, amid the spread of the coronavirus disease (COVID-19), in Rome, Italy May 8, 2020. REUTERS/Remo Casilli

A woman wearing a protective face mask prays outside a church as priest Jorge Luiz de Oliveira delivers the Angelus prayer from the balcony of the Santuario Basilica de Sao Sebastiao, following the coronavirus disease (COVID-19) outbreak, in Rio de Janeiro, Brazil May 6, 2020. REUTERS/Pilar Olivares

A woman wearing a protective face mask prays outside a church as priest Jorge Luiz de Oliveira delivers the Angelus prayer from the balcony of the Santuario Basilica de Sao Sebastiao, following the coronavirus disease (COVID-19) outbreak, in Rio de Janeiro, Brazil, May 5, 2020. Picture taken May 5, 2020. REUTERS/Pilar Olivares

A woman wearing a protective face mask prays outside a church as priest Jorge Luiz de Oliveira delivers the Angelus prayer from the balcony of the Santuario Basilica de Sao Sebastiao, following the coronavirus disease (COVID-19) outbreak, in Rio de Janeiro, Brazil, May 5, 2020. Picture taken May 5, 2020. REUTERS/Pilar Olivares

A woman prays from her balcony as priest Jorge Luiz de Oliveira delivers the Angelus prayer from the balcony of the Santuario Basilica de Sao Sebastiao, following the coronavirus disease (COVID-19) outbreak, in Rio de Janeiro, Brazil May 6, 2020. REUTERS/Pilar Olivares

A man prays from his window as priest Jorge Luiz de Oliveira delivers the Angelus prayer from the balcony of the Santuario Basilica de Sao Sebastiao, following the coronavirus disease (COVID-19) outbreak, in Rio de Janeiro, Brazil May 6, 2020. REUTERS/Pilar Olivares

A woman prays from her window as priest Jorge Luiz de Oliveira delivers the Angelus prayer from the balcony of the Santuario Basilica de Sao Sebastiao, following the coronavirus disease (COVID-19) outbreak, in Rio de Janeiro, Brazil May 6, 2020. REUTERS/Pilar Olivares

Priest Jorge Luiz de Oliveira wearing a protective mask delivers the Angelus prayer from the balcony of the Santuario Basilica de Sao Sebastiao, following the coronavirus disease (COVID-19) outbreak, in Rio de Janeiro, Brazil May 6, 2020. REUTERS/Pilar Olivares

A man prays from his window as priest Jorge Luiz de Oliveira delivers the Angelus prayer from the balcony of the Santuario Basilica de Sao Sebastiao, following the coronavirus disease (COVID-19) outbreak, in Rio de Janeiro, Brazil May 6, 2020. REUTERS/Pilar Olivares

Priest Jorge Luiz de Oliveira wearing a protective mask gestures as he delivers the Angelus prayer from the balcony of the Santuario Basilica de Sao Sebastiao, following the coronavirus disease (COVID-19) outbreak, in Rio de Janeiro, Brazil May 6, 2020. REUTERS/Pilar Olivares

Priest Jorge Luiz de Oliveira gestures as he delivers the Angelus prayer from the balcony of the Santuario Basilica de Sao Sebastiao, following the coronavirus disease (COVID-19) outbreak, in Rio de Janeiro, Brazil May 6, 2020. REUTERS/Pilar Olivares

People listen and pray from their windows as priest Jorge Luiz de Oliveira delivers the Angelus prayer from the balcony of the Santuario Basilica de Sao Sebastiao, following the coronavirus disease (COVID-19) outbreak, in Rio de Janeiro, Brazil May 6, 2020. REUTERS/Pilar Olivares

Priest Jorge Luiz de Oliveira wearing a protective mask gestures as he delivers the Angelus prayer from the balcony of the Santuario Basilica de Sao Sebastiao, following the coronavirus disease (COVID-19) outbreak, in Rio de Janeiro, Brazil May 6, 2020. REUTERS/Pilar Olivares

Priest Jorge Luiz de Oliveira wearing a protective mask delivers the Angelus prayer from the balcony of the Santuario Basilica de Sao Sebastiao, following the coronavirus disease (COVID-19) outbreak, in Rio de Janeiro, Brazil May 6, 2020. REUTERS/Pilar Olivares

A general view of the Tiber river with St. Peter's Basilica in the background, ahead of Pope Francis' Regina Coeli prayer which is to be held at the Vatican without public participation due to the coronavirus disease (COVID-19) outbreak, in Rome, Italy, May 3, 2020. REUTERS/Remo Casilli

A woman walks with St. Peter's Basilica in the background, ahead of Pope Francis' Regina Coeli prayer which is to be held at the Vatican without public participation due to the coronavirus disease (COVID-19) outbreak, in Rome, Italy, May 3, 2020. REUTERS/Remo Casilli

A man runs with St. Peter's Basilica in the background, ahead of Pope Francis' Regina Coeli prayer which is to be held at the Vatican without public participation due to the coronavirus disease (COVID-19) outbreak, in Rome, Italy, May 3, 2020. REUTERS/Remo Casilli

A man jogs at the steps of Santa Maria in Ara Coeli Basilica, as the spread of the coronavirus disease (COVID-19) continues, in Rome, Italy, April 26, 2020. REUTERS/Alberto Lingria