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Q&A: The science behind vaccines, clinical trials
As first doses are administered, Clinical Research Associates exec answers questions about how we got here and what s next
Hospitals in Tennessee were delivered their first shipments of the Pfizer COVID-19 vaccine early Thursday morning and health care workers are lining up to receive their first doses. It has been nine months since the first vaccine candidate was tested in humans, and since then more than 63 clinical trials have been launched to test the various products’ safety, efficacy and long-term durability against the novel coronavirus. 
As the first vaccines begin to roll out under an Emergency Use Authorization, several clinical trials continue to test the long-term efficacy of the vaccines. Nashville-based Clinical Research Associates is currently overseeing phase-three clinical trials for the vaccine candidates developed by Pfizer-BioNTech and Oxford-AstraZeneca. With the help of some reader-submitted que ....

United States , Clinical Research Associates , Emergency Use Authorization , Medical Director , Stephan Sharp , ஒன்றுபட்டது மாநிலங்களில் , மருத்துவ ஆராய்ச்சி கூட்டாளிகள் , அவசரம் பயன்பாடு அங்கீகாரம் , மருத்துவ இயக்குனர் , ஸ்டீபன் கூர்மையான ,