Fields of flowers are seen without onlookers during the coronavirus outbreak in Carlsbad, California, March 25, 2020.

Ellen Werner enjoys the snow-covered landscape following an early spring snowstorm that dumped several inches of heavy, wet snow, in Freeport, Maine.

Dr. Sonia Macieiewski (R) and Dr. Nita Patel, Director of Antibody discovery and Vaccine development, look at a sample of a respiratory virus at Novavax labs in Rockville, Maryland, one of the labs developing a vaccine for the coronavirus.

Muslim men perform Friday prayer at a distance of about one meter to each other as part of a social distancing effort to prevent the spread of new coronavirus outbreak, at Al Akbar mosque in Surabaya, East Java, Indonesia.

A couple kisses at the Barcelona airport, Spain.

Firemen spray disinfectants outside a public market in Manila, Philippines.

A man kneels in front of police blocking a march called by opposition political leader Juan Guaido in Caracas, Venezuela.

Indians put colored powder on each other as they celebrate Holi in Jammu.

A worker wearing a face mask rescues a child at the site where a hotel being used for the coronavirus quarantine collapsed, in the southeast Chinese port city of Quanzhou, Fujian province.

Britain's Catherine, Duchess of Cambridge reacts as she plays Gaelic football during a visit to the local Salthill Knocknacarra Gaelic Athletic Association Club (GAA) in Galway, Ireland.

A dog wearing a face mask is seen on a street in Shanghai, China, March 2, 2020.

President Donald Trump hugs and kisses the American flag after speaking at Conservative Political Action Conference, CPAC 2020, at the National Harbor, in Oxon Hill, Maryland, Feb. 29, 2020.

Turkey-backed Syrian fighters ride a tank in the town of Saraqib in the eastern part of the Idlib province in northwestern Syria. Syrian rebels re-entered the northwestern crossroads town of Saraqib lost to government forces earlier this month. But fighting continued in the outer part of the town today, an AFP reporter says.

Men ride a motorcycle past security forces riding along a street in a riot-affected area, after clashes broke out between people demonstrating for and against a new citizenship law, in New Delhi, India.

Empty tables sit in St. Mark's square in Venice, Italy. Italy has been working to slow the spread of Europe's first major outbreak of the new coronavirus. It has called off the popular Venice Carnival and closed major tourist attractions.