The USA is the worst hit country of the Covid-19 virus. About 1.86 Lakh people died of the virus while over 6.1 million got infected with it. But in the last few days, the new positive cases are trending downwards and amidst these happenings, the US is said to be getting ready to bring out the vaccine. The national public health institute of the United States, Centres for Disease Control and Prevention (CDC) is likely to come up with the vaccine by November 1st. Regarding the same, the C