A woman wearing a protective face mask walks in a street in the capital Sanaa, amid concerns over the spread of the novel coronavirus, on March 28, 2020. Yemen's broken healthcare system has not so far recorded a case of the COVID-19 illness, but aid groups have warned that when it does hit, the impact will be catastrophic in a country already regarded as facing the world's worst humanitarian crisis. / AFP / Mohammed HUWAIS
A woman wearing a protective face mask walks in a street in the capital Sanaa amid concerns over the spread of the novel coronavirus in Yemen. AFP

UN calls for Yemen aid to be maintained after US cutbacks