[WHO] Geneva -- Countries seek innovative ways to mitigate the impact of disruptions and keep services going Seventy-three countries have warned that they are at risk of stock-outs of antiretroviral (ARV) medicines as a result of the COVID-19 pandemic, according to a new WHO survey conducted ahead of the International AIDS Society's biannual conference. Twenty-four countries reported having either a critically low stock of ARVs or disruptions in the supply of these life-saving medicines.