German Chancellor Angela Merkel wears a protective face mask after delivering a speech on the government's response to the coronavirus disease (COVID-19) pandemic in the country's parliament, the Bundestag, in Berlin, Germany, November 26, 2020. REUTERS/Hannibal Hanschke

German Chancellor Angela Merkel wears a protective face mask after delivering a speech on the government's response to the coronavirus disease (COVID-19) pandemic in the country's parliament, the Bundestag, in Berlin, Germany, November 26, 2020. REUTERS/Hannibal Hanschke

German Chancellor Angela Merkel wears a protective face mask after delivering a speech on the government's response to the coronavirus disease (COVID-19) pandemic in the country's parliament, the Bundestag, in Berlin, Germany, November 26, 2020. REUTERS/Hannibal Hanschke

German Chancellor Angela Merkel applauds after delivering a speech on the government's response to the coronavirus disease (COVID-19) pandemic in the country's parliament, the Bundestag, in Berlin, Germany, November 26, 2020. REUTERS/Hannibal Hanschke

German Chancellor Angela Merkel is seen after delivering a speech on the government's response to the coronavirus disease (COVID-19) pandemic in the country's parliament, the Bundestag, in Berlin, Germany, November 26, 2020. REUTERS/Hannibal Hanschke

German Chancellor Angela Merkel is seen after delivering a speech on the government's response to the coronavirus disease (COVID-19) pandemic in the country's parliament, the Bundestag, in Berlin, Germany, November 26, 2020. REUTERS/Hannibal Hanschke

German Chancellor Angela Merkel is seen after delivering a speech on the government's response to the coronavirus disease (COVID-19) pandemic in the country's parliament, the Bundestag, in Berlin, Germany, November 26, 2020. REUTERS/Hannibal Hanschke

German Chancellor Angela Merkel sits after delivering a speech on the government's response to the coronavirus disease (COVID-19) pandemic in the country's parliament, the Bundestag, in Berlin, Germany, November 26, 2020. REUTERS/Hannibal Hanschke

German Chancellor Angela Merkel is seen after delivering a speech on the government's response to the coronavirus disease (COVID-19) pandemic in the country's parliament, the Bundestag, in Berlin, Germany, November 26, 2020. REUTERS/Hannibal Hanschke

German Chancellor Angela Merkel is seen after delivering a speech on the government's response to the coronavirus disease (COVID-19) pandemic in the country's parliament, the Bundestag, in Berlin, Germany, November 26, 2020. REUTERS/Hannibal Hanschke

Germany's Foreign Minister Heiko Maas arrives before German Chancellor Angela Merkel delivers a speech on the government's response to the coronavirus disease (COVID-19) pandemic in the country's parliament, the Bundestag, in Berlin, Germany, November 26, 2020. REUTERS/Hannibal Hanschke

German Chancellor Angela Merkel, wearing a protective face mask, is seen after delivering a speech on the government's response to the coronavirus disease (COVID-19) pandemic in the country's parliament, the Bundestag, in Berlin, Germany, November 26, 2020. REUTERS/Hannibal Hanschke

German Chancellor Angela Merkel delivers a speech on the government's response to the coronavirus disease (COVID-19) pandemic in the country's parliament, the Bundestag, in Berlin, Germany, November 26, 2020. REUTERS/Hannibal Hanschke

German Interior Minister Horst Seehofer is seen as German Chancellor Angela Merkel (not pictured) delivers a speech on the government's response to the coronavirus disease (COVID-19) pandemic in the country's parliament, the Bundestag, in Berlin, Germany, November 26, 2020. REUTERS/Hannibal Hanschke

German Health Minister Jens Spahn wears a protective mask as German Chancellor Angela Merkel (not pictured) delivers a speech on the government's response to the coronavirus disease (COVID-19) pandemic in the country's parliament, the Bundestag, in Berlin, Germany, November 26, 2020. REUTERS/Hannibal Hanschke

German Health Minister Jens Spahn wears a protective mask as German Chancellor Angela Merkel (not pictured) delivers a speech on the government's response to the coronavirus disease (COVID-19) pandemic in the country's parliament, the Bundestag, in Berlin, Germany, November 26, 2020. REUTERS/Hannibal Hanschke

German Chancellor Angela Merkel delivers a speech on the government's response to the coronavirus disease (COVID-19) pandemic in the country's parliament, the Bundestag, in Berlin, Germany, November 26, 2020. REUTERS/Hannibal Hanschke

German Chancellor Angela Merkel delivers a speech on the government's response to the coronavirus disease (COVID-19) pandemic in the country's parliament, the Bundestag, in Berlin, Germany, November 26, 2020. REUTERS/Hannibal Hanschke

German Chancellor Angela Merkel delivers a speech on the government's response to the coronavirus disease (COVID-19) pandemic in the country's parliament, the Bundestag, in Berlin, Germany, November 26, 2020. REUTERS/Hannibal Hanschke

German Chancellor Angela Merkel delivers a speech on the government's response to the coronavirus disease (COVID-19) pandemic in the country's parliament, the Bundestag, in Berlin, Germany, November 26, 2020. REUTERS/Hannibal Hanschke

German Chancellor Angela Merkel, wearing a protective face mask, stands before delivering a speech on the government's response to the coronavirus disease (COVID-19) pandemic in the country's parliament, the Bundestag, in Berlin, Germany, November 26, 2020. REUTERS/Hannibal Hanschke

German Chancellor Angela Merkel delivers a speech on the government's response to the coronavirus disease (COVID-19) pandemic in the country's parliament, the Bundestag, in Berlin, Germany, November 26, 2020. REUTERS/Hannibal Hanschke

German Chancellor Angela Merkel arrives to deliver a speech on the government?s response to the coronavirus disease (COVID-19) pandemic in the country?s parliament, the Bundestag, in Berlin, Germany, November 26, 2020. REUTERS/Hannibal Hanschke

A banner reading: "Responsible Business Initiative - Yes on November 29" is seen on a balcony of a residential building in Zurich, Switzerland November 23, 2020. Picture taken November 23, 2020. REUTERS/Arnd Wiegmann

A banner reading: "Responsible Business Initiative - Yes on November 29" is seen beside a road near Stallikon, Switzerland November 23, 2020. Picture taken November 23, 2020. REUTERS/Arnd Wiegmann

A small banner reading: "Responsible Business Initiative - Yes on November 29" is fixed to the frame of a bicycle in Zurich, Switzerland November 23, 2020. Picture taken November 23, 2020. REUTERS/Arnd Wiegmann

A man pulls the door of a bar in Hong Kong's Lan Kwai Fong after bars, nightclubs and other entertainment venues were closed in response to a renewed rise in coronavirus disease (COVID-19) cases, China November 26, 2020. REUTERS/Lam Yik

A staff pulls down the bar front shutters in Hong Kong's Lan Kwai Fong after bars, nightclubs and other entertainment venues were closed in response to a renewed rise in coronavirus disease (COVID-19) cases, China November 26, 2020. REUTERS/Lam Yik

A staff cleans outside a bar in Hong Kong's Lan Kwai Fong after bars, nightclubs and other entertainment venues were closed in response to a renewed rise in coronavirus disease (COVID-19) cases, China November 26, 2020. REUTERS/Lam Yik

A man passes by a closed bar in Hong Kong's Lan Kwai Fong after bars, nightclubs and other entertainment venues were closed in response to a renewed rise in coronavirus disease (COVID-19) cases, China November 26, 2020. REUTERS/Lam Yik

A bartender prepares a drink at a bar in Hong Kong's Lan Kwai Fong before bars, nightclubs and other entertainment venues are set to close at midnight in response to a renewed rise in coronavirus disease (COVID-19) cases, China November 25, 2020. REUTERS/Lam Yik

People drink at a bar in Hong Kong's Lan Kwai Fong before bars, nightclubs and other entertainment venues are set to close at midnight in response to a renewed rise in coronavirus disease (COVID-19) cases, in Hong Kong, China November 25, 2020. REUTERS/Lam Yik

People drink at a bar in Hong Kong's Lan Kwai Fong before bars, nightclubs and other entertainment venues are set to close at midnight in response to a renewed rise in coronavirus disease (COVID-19) cases, in Hong Kong, China November 25, 2020. REUTERS/Lam Yik

People drink at a bar in Hong Kong's Lan Kwai Fong before bars, nightclubs and other entertainment venues are set to close at midnight in response to a renewed rise in coronavirus disease (COVID-19) cases, in Hong Kong, China November 25, 2020. REUTERS/Lam Yik

People drink at a bar in Hong Kong's Lan Kwai Fong before bars, nightclubs and other entertainment venues are set to close at midnight in response to a renewed rise in coronavirus disease (COVID-19) cases, in Hong Kong, China November 25, 2020. REUTERS/Lam Yik

Tokyo Governor Yuriko Koike arrives for a news conference about the city's response to the coronavirus disease (COVID-19) outbreak, in Tokyo, Japan November 25, 2020. REUTERS/Kim Kyung-Hoon

Members of the media take pictures of Tokyo Governor Yuriko Koike during a news conference about the city's response to the coronavirus disease (COVID-19) outbreak, in Tokyo, Japan November 25, 2020. REUTERS/Kim Kyung-Hoon

Tokyo Governor Yuriko Koike wears a protective mask during a news conference about the city's response to the coronavirus disease (COVID-19) outbreak, in Tokyo, Japan November 25, 2020. REUTERS/Kim Kyung-Hoon

Tokyo Governor Yuriko Koike holds a placard reading: "Short-term intensive infection control measure", a slogan about the city's response to the coronavirus disease (COVID-19) outbreak, at a news conference, in Tokyo, Japan November 25, 2020. REUTERS/Kim Kyung-Hoon

U.N. Secretary-General's Special Envoy for Ebola David Nabarro addresses the media on World Health Organization (WHO)'s health emergency preparedness and response capacities in Geneva, Switzerland, July 31, 2015. REUTERS/Pierre Albouy

A volunteer of a primary care response team holds up a sign reading "The Protector" during a protest against Congress and for a change in the country's constitution, in Lima, Peru November 21, 2020. REUTERS/Sebastian Castaneda

Vice President Mike Pence enters to give a briefing by the White House coronavirus task force about updates on the coronavirus (COVID-19) response in the Brady press briefing room at the White House in Washington, U.S., November 19, 2020. REUTERS/Leah Millis

Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, listens to Vice President Mike Pence during a briefing by the White House coronavirus task force about updates on the coronavirus (COVID-19) response in the Brady press briefing room at the White House in Washington, U.S., November 19, 2020. REUTERS/Leah Millis

Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, enters a briefing by the White House coronavirus task force about updates on the coronavirus (COVID-19) response in the Brady press briefing room at the White House in Washington, U.S., November 19, 2020. REUTERS/Leah Millis

Dr. Deborah Birx, the White House coronavirus response coordinator, speaks in front of a map showing coronavirus disease cases per 100,000 person population at a briefing by the White House coronavirus task force in the Brady press briefing room at the White House in Washington, U.S., November 19, 2020. REUTERS/Leah Millis

Dr. Deborah Birx, the White House coronavirus response coordinator, speaks at a briefing by the White House coronavirus task force in the Brady press briefing room at the White House in Washington, U.S., November 19, 2020. REUTERS/Leah Millis

Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, and Dr. Deborah Birx, the White House coronavirus response coordinator, arrive to attend and speak at a briefing by the White House coronavirus task force in the Brady press briefing room at the White House in Washington, U.S., November 19, 2020. REUTERS/Leah Millis

Tokyo Governor Yuriko Koike speaks at a news conference on city's response to the coronavirus disease (COVID-19) outbreak, in Tokyo, Japan, November 19, 2020. REUTERS/Issei Kato

Tokyo Governor Yuriko Koike speaks at a news conference on city's response to the coronavirus disease (COVID-19) outbreak, in Tokyo, Japan, November 19, 2020. REUTERS/Issei Kato

Tokyo Governor Yuriko Koike holds a sign as she speaks at a news conference on city's response to the coronavirus disease (COVID-19) outbreak, in Tokyo, Japan, November 19, 2020. REUTERS/Issei Kato

Tokyo Governor Yuriko Koike speaks at a news conference on city's response to the coronavirus disease (COVID-19) outbreak, in Tokyo, Japan, November 19, 2020. REUTERS/Issei Kato

Tokyo Governor Yuriko Koike takes off her mask during a news conference on city's response to the coronavirus disease (COVID-19) outbreak, in Tokyo, Japan, November 19, 2020. REUTERS/Issei Kato

Tokyo Governor Yuriko Koike speaks at a news conference on city's response to the coronavirus disease (COVID-19) outbreak, in Tokyo, Japan, November 19, 2020. REUTERS/Issei Kato

Tokyo Governor Yuriko Koike speaks at a news conference on city's response to the coronavirus disease (COVID-19) outbreak, in Tokyo, Japan, November 19, 2020. REUTERS/Issei Kato

Tokyo Governor Yuriko Koike speaks at a news conference on city's response to the coronavirus disease (COVID-19) outbreak, in Tokyo, Japan, November 19, 2020. REUTERS/Issei Kato

Demonstrators are seen outside the National Congress as Argentina's lower house debates a bill to apply a one-off tax on the super-rich, in order to help pay for the coronavirus disease (COVID-19) response, in Buenos Aires, Argentina November 17, 2020. REUTERS/Agustin Marcarian

A man wears a face mask depicting Argentina's President Alberto Fernandez and Vice President Cristina Fernandez de Kirchner outside the National Congress as Argentina's lower house debates a bill to apply a one-off tax on the super-rich, in order to help pay for the coronavirus disease (COVID-19) response, in Buenos Aires, Argentina November 17, 2020. REUTERS/Agustin Marcarian

A girl picks flowers outside the National Congress as Argentina's lower house debates a bill to apply a one-off tax on the super-rich, in order to help pay for the coronavirus disease (COVID-19) response, in Buenos Aires, Argentina November 17, 2020. REUTERS/Agustin Marcarian

A man wearing a shirt depicting Argentina's President Alberto Fernandez is seen outside the National Congress as Argentina's lower house debates a bill to apply a one-off tax on the super-rich, in order to help pay for the coronavirus disease (COVID-19) response, in Buenos Aires, Argentina November 17, 2020. REUTERS/Agustin Marcarian

People march towards the National Congress as Argentina's lower house debates a bill to apply a one-off tax on the super-rich, in order to help pay for the coronavirus disease (COVID-19) response, in Buenos Aires, Argentina November 17, 2020. REUTERS/Agustin Marcarian