A vending machine of Swiss self-service retailer Selecta is seen at Binz train station in Zurich, Switzerland May 28, 2020. REUTERS/Arnd Wiegmann

The logo of Swiss self-service retailer Selecta is seen on a vending machine at the airport in Zurich, Switzerland May 28, 2020. REUTERS/Arnd Wiegmann

A vending machine of Swiss self-service retailer Selecta is seen at Binz train station in Zurich, Switzerland May 28, 2020. REUTERS/Arnd Wiegmann

A social distancing sign is seen at Cointrin Airport during the coronavirus disease (COVID-19) outbreak, in Geneva, Switzerland, May 28, 2020. REUTERS/Denis Balibouse

Disinfected luggage trolleys are seen at Cointrin Airport during the coronavirus disease (COVID-19) outbreak, in Geneva, Switzerland, May 28, 2020. REUTERS/Denis Balibouse

A person walks past closed Swiss Airlines check-in counters at Cointrin Airport during the coronavirus disease (COVID-19) outbreak, in Geneva, Switzerland, May 28, 2020. REUTERS/Denis Balibouse

People walk past closed Swiss Airlines check-in counters at Cointrin Airport during the coronavirus disease (COVID-19) outbreak, in Geneva, Switzerland, May 28, 2020. REUTERS/Denis Balibouse

A screen showing rules of social distancing and maintaining hygiene is seen at Swiss Airlines check-in counters at Cointrin Airport during the coronavirus disease (COVID-19) outbreak, in Geneva, Switzerland, May 28, 2020. REUTERS/Denis Balibouse

Swiss Airlines check-in counters are pictured at Cointrin Airport during the coronavirus disease (COVID-19) outbreak, in Geneva, Switzerland, May 28, 2020. REUTERS/Denis Balibouse

Protective masks are displayed above snacks and drinks at a "Safety Station" vending machine of Swiss self-service retailer Selecta at the airport in Zurich, Switzerland May 28, 2020. REUTERS/Arnd Wiegmann

Protective masks are displayed above snacks and drinks at a "Safety Station" vending machine of Swiss self-service retailer Selecta at the airport in Zurich, Switzerland May 28, 2020. REUTERS/Arnd Wiegmann

Protective masks are displayed above snacks and drinks at a "Safety Station" vending machine of Swiss self-service retailer Selecta at the airport in Zurich, Switzerland May 28, 2020. REUTERS/Arnd Wiegmann

Travellers are seen as the spread of the coronavirus disease (COVID-19) continues, during check-in at the airport in Zurich, Switzerland May 28, 2020. REUTERS/Arnd Wiegmann

Travellers are seen as the spread of the coronavirus disease (COVID-19) continues, in a hall at the airport in Zurich, Switzerland May 28, 2020. REUTERS/Arnd Wiegmann

Managing Director of easyJet Switzerland Jean-Marc Thevenaz attends a news conference at Cointrin Airport on new airline safety measures as the Swiss government eases the lockdown measures during the coronavirus disease (COVID-19) outbreak, in Geneva, Switzerland, May 28, 2020. REUTERS/Denis Balibouse

EasyJet check-in counters are pictured at Cointrin Airport during the coronavirus disease (COVID-19) outbreak, in Geneva, Switzerland, May 28, 2020. REUTERS/Denis Balibouse

A pictogram is seen placed near easyJet check-in counters at Cointrin Airport during the coronavirus disease (COVID-19) outbreak, in Geneva, Switzerland, May 28, 2020. REUTERS/Denis Balibouse

EasyJet check-in counters are pictured at Cointrin Airport during the coronavirus disease (COVID-19) outbreak, in Geneva, Switzerland, May 28, 2020. REUTERS/Denis Balibouse

EasyJet check-in counters are pictured at Cointrin Airport during the coronavirus disease (COVID-19) outbreak, in Geneva, Switzerland, May 28, 2020. REUTERS/Denis Balibouse

EasyJet logo is pictured near check-in counters at Cointrin Airport during the coronavirus disease (COVID-19) outbreak, in Geneva, Switzerland, May 28, 2020. REUTERS/Denis Balibouse

EasyJet logo is pictured at Cointrin Airport during the coronavirus disease (COVID-19) outbreak, in Geneva, Switzerland, May 28, 2020. REUTERS/Denis Balibouse

A man sprays a treatment on the vineyards during the coronavirus disease (COVID-19) outbreak in Saviese, Switzerland May 27, 2020. REUTERS/Denis Balibouse

People enjoy a drink on a terrace of a bar next to a desinfectant bottle as the Swiss governement eases the lockdown measures during the coronavirus disease (COVID-19) outbreak in Lausanne, Switzerland May 27, 2020. REUTERS/Denis Balibouse

People enjoy a drink on a terrace of a bar next to a disinfectant bottle as the Swiss government eases the lockdown measures during the coronavirus disease (COVID-19) outbreak in Lausanne, Switzerland May 27, 2020. REUTERS/Denis Balibouse

Workers clean the windows of a building of Roche in Rotkreuz May 27, 2020. REUTERS/Arnd Wiegmann

Workers clean the windows of a building of Roche in Rotkreuz May 27, 2020. REUTERS/Arnd Wiegmann

The peak of Mount Pilatus is seen in the background as workers clean the windows of a building of Roche in Rotkreuz May 27, 2020. REUTERS/Arnd Wiegmann

The peak of Mount Pilatus is seen in the background as workers clean the windows of a building of Roche in Rotkreuz May 27, 2020. REUTERS/Arnd Wiegmann

The logo of Swiss telecoms group Swisscom is seen at an office building, in Zurich, Switzerland May 26, 2020. REUTERS/Arnd Wiegmann

The logo of Swiss telecoms group Swisscom is seen at an office building, in Duebendorf, Switzerland May 26, 2020. REUTERS/Arnd Wiegmann

The logo of Swiss telecoms group Swisscom is seen at an office building, in Zurich, Switzerland May 26, 2020. REUTERS/Arnd Wiegmann

A man rides a bicycle as the EPFL logo is pictured on the second day of the pilot for the tracing application "SwissCovid", based on Google and Apple protocols, during the coronavirus disease (COVID-19) outbreak at the Swiss Federal Institute of Technology Lausanne in Lausanne, Switzerland May 26, 2020. REUTERS/Denis Balibouse

An EPFL staff displays the tracing application "SwissCovid" on his mobile device on the second day of the pilot for the app based on Google and Apple protocols during the coronavirus disease (COVID-19) outbreak at the Swiss Federal Institute of Technology Lausanne in Lausanne, Switzerland May 26, 2020. REUTERS/Denis Balibouse

An EPFL staff displays the tracing application "SwissCovid" on his mobile device on the second day of the pilot for the app based on Google and Apple protocols during the coronavirus disease (COVID-19) outbreak at the Swiss Federal Institute of Technology Lausanne in Lausanne, Switzerland May 26, 2020. REUTERS/Denis Balibouse

An EPFL staff displays the tracing application "SwissCovid" on his mobile device on the second day of the pilot for the app based on Google and Apple protocols during the coronavirus disease (COVID-19) outbreak at the Swiss Federal Institute of Technology Lausanne in Lausanne, Switzerland May 26, 2020. REUTERS/Denis Balibouse

An EPFL staff displays the tracing application "SwissCovid" on his mobile device on the second day of the pilot for the app based on Google and Apple protocols during the coronavirus disease (COVID-19) outbreak at the Swiss Federal Institute of Technology Lausanne in Lausanne, Switzerland May 26, 2020. REUTERS/Denis Balibouse

An EPFL logo is pictured on the second day of the pilot for the tracing application "SwissCovid", based on Google and Apple protocols, during the coronavirus disease (COVID-19) outbreak at the Swiss Federal Institute of Technology Lausanne in Lausanne, Switzerland May 26, 2020. REUTERS/Denis Balibouse

An EPFL logo is pictured on the second day of the pilot for the tracing application "SwissCovid", based on Google and Apple protocols, during the coronavirus disease (COVID-19) outbreak at the Swiss Federal Institute of Technology Lausanne in Lausanne, Switzerland May 26, 2020. REUTERS/Denis Balibouse

An EPFL staff displays the tracing application "SwissCovid" on his mobile device on the second day for the pilot of the app based on Google and Apple protocols during the coronavirus disease (COVID-19) outbreak at the Swiss Federal Institute of Technology Lausanne in Lausanne, Switzerland May 26, 2020. REUTERS/Denis Balibouse

A sign reading: "Please wait, we will pick you up" is placed in front of stall on a weekly market in Zurich, Switzerland May 26, 2020. REUTERS/Arnd Wiegmann

A sign reading: "Always keep a distance of 2 meters from all persons present" is placed in front of stall on a weekly market in Zurich, Switzerland May 26, 2020. REUTERS/Arnd Wiegmann

A general view shows a building of the Swiss National Bank (SNB) in Bern, Switzerland May 20, 2020. Picture taken May 20, 2020. REUTERS/Arnd Wiegmann

A general view shows the building of the Swiss National Bank (SNB) in Bern, Switzerland May 20, 2020. Picture taken May 20, 2020. REUTERS/Arnd Wiegmann

The sun is reflected in a window of the Swiss National Bank (SNB) in Bern, Switzerland May 20, 2020. Picture taken May 20, 2020. REUTERS/Arnd Wiegmann

Statues are seen on the building of the Swiss National Bank (SNB) in Bern, Switzerland May 20, 2020. Picture taken May 20, 2020. REUTERS/Arnd Wiegmann

A Swiss National Bank logo is pictured on the SNB building in Bern, Switzerland May 20, 2020. Picture taken May 20, 2020. REUTERS/Arnd Wiegmann

Andrea Caroni, President of the Judicial Committee of the Swiss Parliament, addresses a news conference after the interview of Swiss Attorney General Michael Lauber that could lead to his impeachment, after criticism of his handling of an investigation into alleged corruption surrounding football's governing body FIFA, in Bern, Switzerland May 20, 2020. REUTERS/Arnd Wiegmann

Andrea Caroni, President of the Judicial Committee of the Swiss Parliament, addresses a news conference after the interview of Swiss Attorney General Michael Lauber that could lead to his impeachment, after criticism of his handling of an investigation into alleged corruption surrounding football's governing body FIFA, in Bern, Switzerland May 20, 2020. REUTERS/Arnd Wiegmann

Andrea Caroni, President of the Judicial Committee of the Swiss Parliament, addresses a news conference after the interview of Swiss Attorney General Michael Lauber that could lead to his impeachment, after criticism of his handling of an investigation into alleged corruption surrounding football's governing body FIFA, in Bern, Switzerland May 20, 2020. REUTERS/Arnd Wiegmann

Swiss Attorney General Michael Lauber arrives before an interview by the Judicial Committee of the Swiss Parliament that could lead to his impeachment, after criticism of his handling of an investigation into alleged corruption surrounding football's governing body FIFA, in Bern, Switzerland May 20, 2020. REUTERS/Arnd Wiegmann

Swiss Attorney General Michael Lauber arrives before an interview by the Judicial Committee of the Swiss Parliament that could lead to his impeachment, after criticism of his handling of an investigation into alleged corruption surrounding football's governing body FIFA, in Bern, Switzerland May 20, 2020. REUTERS/Arnd Wiegmann

Swiss Attorney General Michael Lauber arrives before an interview by the Judicial Committee of the Swiss Parliament that could lead to his impeachment, after criticism of his handling of an investigation into alleged corruption surrounding football's governing body FIFA, in Bern, Switzerland May 20, 2020. REUTERS/Arnd Wiegmann

Swiss Attorney General Michael Lauber arrives before an interview by the Judicial Committee of the Swiss Parliament that could lead to his impeachment, after criticism of his handling of an investigation into alleged corruption surrounding football's governing body FIFA, in Bern, Switzerland May 20, 2020. REUTERS/Arnd Wiegmann

Swiss Attorney General Michael Lauber arrives before an interview by the Judicial Committee of the Swiss Parliament that could lead to his impeachment, after criticism of his handling of an investigation into alleged corruption surrounding football's governing body FIFA, in Bern, Switzerland May 20, 2020. REUTERS/Arnd Wiegmann

The blade of Paralympic athlete Sofia Gonzalez is pictured after a training session during the outbreak of the coronavirus disease (COVID-19) in Jongny, Switzerland, May 19, 2020. REUTERS/Denis Balibouse

Paralympic athlete Sofia Gonzalez poses after a training session during the outbreak of the coronavirus disease (COVID-19) in Jongny, Switzerland, May 19, 2020. REUTERS/Denis Balibouse

Paralympic athlete Sofia Gonzalez trains in her home garden during the outbreak of the coronavirus disease (COVID-19) in Jongny, Switzerland, May 19, 2020. REUTERS/Denis Balibouse

Paralympic athlete Sofia Gonzalez poses after a training session during the outbreak of the coronavirus disease (COVID-19) in Jongny, Switzerland, May 19, 2020. REUTERS/Denis Balibouse

Paralympic athlete Sofia Gonzalez trains in her home garden during the outbreak of the coronavirus disease (COVID-19) in Jongny, Switzerland, May 19, 2020. REUTERS/Denis Balibouse

Paralympic athlete Sofia Gonzalez trains in her home garden during the outbreak of the coronavirus disease (COVID-19) in Jongny, Switzerland, May 19, 2020. REUTERS/Denis Balibouse TPX IMAGES OF THE DAY