It seems to me that the clinical trials are slowing down. Around 5.000 people received the second/final dose of the trial vaccine in the previous week at the COVE study, but this week only ~2.000 volunteers received it. My projections was that the required number for people would have been achieved by 16th of October. But now - we (we all!!!) should have to wait longer. And waiting hurts.
British Telegraph reports https://www.telegraph.co.uk/global-health/science-and-disease/covid-19-vaccine-coronavirus-update-latest-ready-trial-news-regeneron/ that Britons will start direct human challenge trials next year - i.e. the vaccinated volunteers will be exposed intentionally to the virus to get the faster feedback. Such trails are thanks to dexamethasone that can manage the infection if the vaccine appears not to be protective enough.