Scientists ask: Without trial data, how can we trust Russia's Covid-19 vaccine?
Intent on being first in the global race to develop a vaccine against the pandemic disease, Russia has yet to conduct large-scale trials of the shot that would produce data to show whether it works
- ট্যাগ:
- আন্তর্জাতিক
- কার্যকারিতা
- করোনা ভ্যাকসিন