GENEVA (Reuters) - The World Health Organization is looking at interim data from its large multi-country trial of the combination of HIV drugs Lopinavir and Ritonavir to treat COVID-19 patients, the UN agency?s chief scientist Soumya Swaminathan said on Thursday. Her comments come after the WHO on Wednesday stopped testing of the malaria drug hydroxychloroquine in the trial of treatments for COVID-19 patients, after studies indicated it showed no benefit in those who have the disease. She said more study was needed to see whether hydroxchloroquine could prevent infection.