sars covid-19 is a disease that has affected the whole world in the last year, but where did it start?
This virus has started spreading in humans starting from Wuhan, a city in China that has become the center of many conversations on the subject. After China, cases were found in Europe but in particular in Northern Italy. From here this “Plague 2.0” has started to spread more rapidly in the world, despite the attempts of various nations to slow down its spread by decreasing the communication routes (closure of airports and more selective borders).
There are various reasons why we got into this situation, I can’t list them all but I can name a few:
- Lack of prevention (personal hygiene, gatherings of people)
- slow responsiveness of heads of state in imposing obligations against the spread of the virus
- totally new virus (we did not have knowledge)
- fast-mutating virus (now we have many variants)
- spreads by air so difficult to prevent
the contagion curve of covid 19 was very sudden here I report an example with all the continets and the various influences
come possiamo notare la maggior diffusione del contagio si ha nei paesi più sviluppati o comunque con un forte commercio che ne permette una diffusione più veloce.
la curva di vaccinazioni presa in considerazione è quella del vaccino moderna che ha una rateo di efficacia tra l’89,3% e il 96,8%
