Yemen has faced major outbreaks of disease - cholera in particular - as a result of a war that's lasted more than five years in what was already the poorest country in the Arab world.

A health official in the city of Aden acknowledged it was hard to even detect the virus given that other prevalent diseases, such as dengue fever, exhibit similar symptoms and testing for Covid-19 remains extremely limited.

The entry points into Yemen have been sealed further to try to prevent coronavirus from getting into the country - but now it's there, fears are rising over how quickly it might spread.

For many in Yemen, the new threat is just one more challenge in a broken country.