A Nigerian Doctor, Onyema Ogbuagu, MBBCH, FACP who is a Professor of Medicine at Yale University is part of a team of physicians and scientists at Yale-New Haven Hospital testing experimental therapies for the disease.
Ogbuagu serves as principal investigator for the YNHH trial of the antiviral drug Remdesivir, a drug that halts the replication of viruses. Ogbuagu’s study looks at two groups: patients with moderate and severe coronavirus symptoms.
It is interesting to note that Onyema Ogbuagu trained at the University of Calabar.

https://yaledailynews.com/blog/2020/04/06/162063/