Dr. Maria van Kerkhove, the technical lead for the WHO’s Health Emergencies Program, has congratulated the Chinese city of Wuhan for having no severe coronavirus cases left.

Wuhan was ground zero for the country’s coronavirus outbreak, and was placed under lockdown in January. The lockdown only lifted in April.

“It is welcome news to hear that there are no severe cases from Wuhan. That city has had the hardest hit early on,” van Kerkhove said. “Nothing but admiration and thanks for the tireless efforts of the people of Wuhan.”

She also praised residents who followed emergency measures and stayed at home.

“We take our hats off to you and thank you for your commitment and service and sharing with us in the world what you have been able to do,” she said.