Belgians applaud and make noise to celebrate medical personnel dealing with coronavirus disease (COVID-19) in Brussels, Belgium March 18, 2020.

Residents clap and bang utensils from their balconies to cheer for emergency personnel and sanitation workers who are on the frontlines in the fight against coronavirus, in Mumbai, India, March 22, 2020.

A girl writes a message in support of key workers, as the spread of the coronavirus disease (COVID-19) continues, High Wycombe, Britain, March 26, 2020.

Health workers from Clinic hospital applaud citizens who show them gratitude from their balconies and windows, during the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain March 24, 2020.

A banner which reads "Thanks to the caregivers" is seen on a balcony in Paris as a lockdown is imposed to slow the rate of the coronavirus disease (COVID-19) spread in France, March 23, 2020.

A message reading "Thank you NHS" is displayed on the outside of Wembley Stadium as the spread of the coronavirus disease (COVID-19) continues. London, Britain March 20, 2020.

UW Medical Center Volunteer Program Manager Cynnie Foss, left, accepts food donations from local science writer and former UW employee Ellen Kuwana, who is running an ongoing fundraiser on social media to donate food to healthcare workers during the outbreak of coronavirus disease (COVID-19) in Seattle, Washington, U.S. March 20, 2020.

Family members applaud from their balconies during a call on social media to thank Spanish medical staff fighting against coronavirus as they remain confined inside their homes due to the coronavirus outbreak, in downtown Ronda, southern Spain March 14, 2020.

A woman and children stand on their balcony and clap as they take part in an initiative to hold mass applause for medical teams fighting the coronavirus outbreak in Ashkelon, Israel March 19, 2020.

A health worker from Clinic hospital takes a picture of his mates as police officers and citizens show them gratitude from their balconies and windows, during the coronavirus disease (COVID-19) outbreak, in Barcelona, Spain March 24, 2020.

A message thanking healthcare workers during the coronavirus outbreak is seen on an electronic billboard in a nearly empty Times Square in Manhattan in New York City, New York, U.S., March 20, 2020.

Chef Danny Conkling of The London Plane restaurant serves hundreds of free meals to healthcare workers on the front lines of the coronavirus disease (COVID-19) outbreak at Harborview Medical Center in Seattle, Washington, U.S. March 21, 2020.

Residents clap and bang utensils to cheer for emergency personnel and sanitation workers who are on the frontlines in the fight against coronavirus, in Ahmedabad, India, March 22, 2020.

An NHS worker applauds from a window at Chelsea and Westminster Hospital during the Clap for our carers campaign in support of the NHS, as the spread of the coronavirus disease (COVID-19) continues, London, Britain, March 26, 2020.

The London Eye is pictured lit blue in support of the NHS, as the spread of the coronavirus disease (COVID-19) continues, London, Britain, March 26, 2020.

A man passes a sign on a boarded up business thanking those still working amid the coronavirus disease (COVID-19) outbreak in Seattle, Washington, U.S., March 24, 2020.

A family applaud from their balcony during a call on social media to thank Spanish medical staff fighting against coronavirus as they remain confined inside their homes due to the coronavirus outbreak, in downtown Ronda, southern Spain March 14, 2020.

Belgians applaud and make noise to celebrate medical personnel dealing with coronavirus disease (COVID-19) in Brussels, Belgium March 18, 2020.

People applaud outside their homes in Calbourne Road during the Clap For Our Carers campaign in support of the NHS, as the spread of the coronavirus disease (COVID-19) continues, Balham, London, Britain, March 26, 2020.

A man puts on protective gloves as he walks past a billboard thanking NHS staff, as the spread of the coronavirus disease (COVID-19) continues, in London, Britain, March 26, 2020.

A woman claps as she takes part in an initiative to hold a Swiss-wide applause for medical teams fighting the coronavirus outbreak in Zurich, Switzerland March 20, 2020.

A local medical worker embraces and bids farewell to a medical worker from Jiangsu at the Wuhan Railway Station as the medical team from Jiangsu leaves Wuhan, the epicentre of the coronavirus disease (COVID-19) outbreak, in Hubei province, China March 19, 2020. China Daily via REUTERS

Health workers collect food from Delivery 4 Heroes on stretchers at Clinic hospital, during the outbreak of coronavirus disease (COVID-19) as near two hundred dinners are being delivered per day to Medical Staff as a gesture of thanks from the City?s Takeaway Businesses, in Barcelona, Spain, March 26, 2020.

People stand on their balconies and clap as they take part in a Swiss-wide applause for medical teams fighting the coronavirus outbreak in Zurich, Switzerland March 20, 2020.