Coronaviruses have been causing problems for humanity for a long time. Several versions are known to trigger common colds and more recently two types have set off outbreaks of deadly illnesses: severe acute respiratory syndrome (Sars) and Middle East respiratory syndrome (Mers).
But their impact has been mild compared with the global havoc unleashed by the coronavirus that is causing the Covid-19 pandemic. In only a few months it has triggered lockdowns in dozens of nations and claimed more than 100,000 lives. And the disease continues to spread.
The full article offers answers to the following questions:
Where did it come from and how did it first infect humans? How does the virus spread and how does it affect people? Why does the virus sometimes cause death? Are we protected for life if we get infected? When will we get a vaccine? Source:
Article submitted by, Great Gazoo.