The only definitive answer will be obtained by statistical analysis at the completion of the on-going clinical trials. We'll know top-line results very soon (in clinical trial terms this is a sprint).
Gilead is giving out the drug for compassionate use. There have been multiple reports the last couple of weeks of patients who were on death's door (hence the compassionate use) who have recovered. Information is all around you if you look for it. There was the WSJ article on the NIH physician last week that was basically ignored. CNBC has been too busy pumping other stocks to report about GILD.