Since the start of the conflict in 2015, more than 3.6 million people have been driven from their homes in Yemen. With more than 24 million people across the country in need of assistance, it remains the world’s largest humanitarian crisis. Thousands continue to stream into Marib City and nearby areas in search of safety. Marib made it earn the “city of refugees” title, now hosting 750,000 displaced people. The humanitarian needs are fast accruing and basic services and assistance are overstretched. Many displaced families are now living in overcrowded, makeshift sites with poor access to clean water and sanitation, putting them at heightened risk to a COVID-19 outbreak. The data you contribute will support humanitarian organisations to better deliver aid to those more in need.