Deliberately exposing people to the coronavirus behind covid-19 has helped scientists understand why some people seem to be ...

There have been questions about the necessity of the challenge studies, particularly as the number of vaccines becoming available for COVID-19 is rising quickly, amid concerns that if a volunteer ...

AUGUST 25, 2020 — Five teams made up of 22 graduate students working across research disciplines at UTSA have taken top honors in the first COVID-19 Transdisciplinary Team Grand Challenge. The ...

The World Health Organization has already produced guidance on challenge trials that suggests that risk of death from COVID-19 is approximately one in 3,000, around the same for live kidney donation.

Pfizer, which made the first COVID-19 vaccine to get regulatory approval, emphasised the significance of their partnership with German company BioNTech in meeting the challenge so quickly.

Combining traditional medicine and modern science, these courageous doctors have risen to the challenge Photographs ... the first cases of Covid-19 appeared in Navajo Nation.