Among the infectious disease that existed, Black Death was the deadliest pandemic recorded in human history killing 75 to 200 million people in Eurasia and North Africa, peaking in Europe from 1347 to 1351. Which bacteria cause such disease?

The Spanish flu was an unusually deadly influenza pandemic. It infected 500 million people–about a third of the world's population at the time–in four successive waves. Which influenza virus caused this?

This is an oral antiviral approved for the treatment of influenza in Japan. It selectively inhibits RNA polymerase, which is necessary for viral replication.

This is a medication used to prevent and treat malaria.

This is a type of corticosteroid medication that helps severe cases of COVID-19 by suppressing over an active immune response.

The immune system protects the body from possibly harmful substances by recognizing and responding to antigens. This is an overreaction of the body's immune system.

The causative viral agent of the disease COVID-19 is _____. It is transmitted through respiratory droplets and enters cells via the ACE2 receptor found on alveolar epithelial cells.

He was a Chinese ophthalmologist who worked at Wuhan Central Hospital that issued emergency warnings to local hospitals about a number of mysterious pneumonia cases discovered in the city in the previous week on December 30, 2019.

What is the most effective protection measure against COVID-19?