Непонятно одно. The Great Influenza began in 1918 and spread with devastating speed across the world, infecting around a 19.___________(THREE) of the global population. This horrific disease was nothing like the winter flu. Those who were 20.___________(BADLY) affected, suffered acute pain and profuse bleeding from their skin, eyes, and ears. Very quickly, over the space of a few hours or a few days at best, their lungs filled up with fluid and they suffocated. Now this 21. ___________(KNOW) as acute respiratory distress syndrome (ARDS), but doctors at the time called it "atypical pneumonia". As more people developed immunity, the virus could no longer spread, and the pandemic ended in 1920.
                                                                                              Coronaviruses
Just as scientists were getting a handle on flu 22. ___________(VIRUS), coronaviruses emerged as a major pandemic threat. Coronaviruses were identified in the 1930s in chickens for the first time and named by Scottish virologist June Almeida in 1967, when she 23.___________(MAKE) the first electron microscope images. In 2003, Carlo Urbani, an Italian doctor working in Hanoi, Vietnam, realised that a patient admitted to the hospital did not have flu at that time, but was suffering from an entirely new disease, which is now known as SARS, or severe acute respiratory syndrome, from the way it 24.___________(ATTACK) the lungs.

The Great Influenza began in 1918 and spread with devastating speed across the world, infecting around a third of the global population. This horrific disease was nothing like the winter flu. Those who were badly affected suffered acute pain and profuse bleeding from their skin, eyes, and ears. Very quickly, over the space of a few hours or a few days at best, their lungs filled up with fluid and they suffocated. Now this is known as acute respiratory distress syndrome (ARDS), but doctors at the time called it "atypical pneumonia". As more people developed immunity, the virus could no longer spread, and the pandemic ended in 1920.

Coronaviruses Just as scientists were getting a handle on flu viruses, coronaviruses emerged as a major pandemic threat. Coronaviruses were identified in the 1930s in chickens for the first time and named by Scottish virologist June Almeida in 1967, when she made the first electron microscope images. In 2003, Carlo Urbani, an Italian doctor working in Hanoi, Vietnam, realized that a patient admitted to the hospital did not have flu at that time, but was suffering from an entirely new disease, which is now known as SARS, or severe acute respiratory syndrome, from the way it attacks the lungs.