The continued stock out of the antiretroviral tenofovir and the failure to advise health workers on how to deal with it is a looming disaster, HIV Clinicians and activists are warning. Reports of stock outs go as far back as October last year with the explanation given that the drug suppliers Aspen and Sonke were not able to meet the demand once they were awarded the tender. Dr Francesca Conradie, President of the Southern African HIV Clinicians Society said they had submitted the clinical guidelines for health workers on how to swop out medications in February, but that it has not been ratified by the health department meaning it is not being used.