The typical process of developing a vaccine (that is effective and safe) takes 10-15 years.


The fastest vaccine prepared until now is for mumps and that took 4 years. 


The process includes five stages - exploratory stage, pre-clinical stage, clinical trials, regulatory approvals, and manufacturing.


The development takes about 2-4 years, but the latest technologies and the similarities between the novel coronavirus and the first SARS virus have led to the development of as many as 118 candidate vaccines within 5 months.


Out of the 118 vaccine candidates, eight are already in the clinical human trials phase.


The process of producing a vaccine in sufficient quantity could take many months, but with adequate partnerships and pre-emptive efforts could cut that period short.