The world desperately needed a vaccine to reduce the miserly caused by SARS-CoV-2. 

Outstanding work done by scientists, vaccine industry, funding agencies and governments has result in a clutch of vaccines being made available within a year of the declaration of the pandemic.

The general expectation is that which the vaccine against Covid-19 is rolled out in the population, it would mark the end of the pandemic. 

Many are counting on the vaccine to built enough herd immunity, resulting in slowing down of the transmission and finally stopping it.