(200616) -- SANAA, June 16, 2020 () -- Health workers wearing protective suits are seen at a COVID-19 ward of a heath center in Sanaa, Yemen, June 14, 2020. The total number of COVID-19 cases in Yemen's government-controlled provinces increased to 844 on Monday as 116 new cases were confirmed.,Image: 532206011, License: Rights-managed, Restrictions: WORLD RIGHTS excluding China - Fee Payable Upon Reproduction - For queries contact Avalon.red - [email protected] London: +44 (0) 20 7421 6000 Los Angeles: +1 (310) 822 0419 Berlin: +49 (0) 30 76 212 251, Model Release: no

HANDOUT - 23 April 2020, Italy, Rome: Italian Prime Minister Giuseppe Conte delivers a press statement after an EU summit held via video conference to discuss the Coronavirus (COVID-19) measures. Photo: Filippo Attili/Italian Government/dpa - ATTENTION: editorial use only and only if the credit mentioned above is referenced in full

GOLD COAST, AUSTRALIA - MARCH 26: Queensland Police stop vehicles at a Police checkpoint set up at the Queensland and New South Wales border in Coolangatta on March 26, 2020 on the Gold Coast, Australia. Queensland borders have been shut down since midnight in response to the COVID-19 pandemic. Interstate visitors will be turned back, while any Queensland residents returning from other states or territories must now self-isolate for 14 days unless they are an exempt person travelling for freight or other essential travel. There are now 2676 confirmed cases of COVID-19 in Australia and the death toll stands at 11. (Photo by Chris Hyde/Getty Images)

ROME, ITALY - MARCH 17: A man works in the third Covid 3 Hospital before the opening, at Casal Palocco, on March 17, 2020, in Rome, Italy. The Italian Government continues to enforce the nationwide lockdown measures to control the coronavirus spread. (Photo by Antonio Masiello/Getty Images)

OAKLAND, CALIFORNIA - MARCH 10: A passenger from the Princess Cruises Grand Princess cruise ship washes his hands before boarding a charter plane at Oakland International Airport on March 10, 2020 in Oakland, California. Passengers are slowly disembarking from the Princess Cruises Grand Princess a day after it docked at the Port of Oakland. Some passengers will be flown to other states where they will quarantine for 14 days. The ship was held off the coast of California after 21 people on board tested tested positive for COVID-19 also known as the Coronavirus. (Photo by Justin Sullivan/Getty Images)

MILAN, ITALY - MARCH 08: A general view of Piazza del Duomo square and the Cathedral on March 08, 2020 in Milan, Italy. Prime Minister Giuseppe Conte announced overnight a "national emergency" due to the coronavirus outbreak and imposed quarantines on the Lombardy and Veneto regions, which contain roughly a quarter of the country's population. Italy has the highest number of cases and fatalities in Europe. (Photo by Emanuele Cremaschi/Getty Images)