Youths wearing masks as a precaution due to COVID-19 coronavirus disease, sit in the back of a truck carrying out a fumigation in an area in Yemen's southern coastal city of Aden on May 5, 2020, as part of a campaign to prevent the spread of insect-borne diseases such as malaria, dengue fever, and Chikungunya virus amidst the novel coronavirus pandemic.  / AFP / Saleh Al-OBEIDI
Youths wearing masks as a precaution due to Covid-19 coronavirus disease, sit in the back of a truck carrying out a fumigation in an area in Yemen's southern coastal city of Aden. AFP  

Yemen coronavirus cases mount as officials say public ignoring advice