Question

why we do not have vaccine of corona​

Answer 1

Explanation:

When a disease is new, there is no vaccine until one is developed. It can take a number of years for a new vaccine to be developed

Answer 2

Answer:

corona virus vaccine is not yet identified

Explanation:

reasons:

• When a disease is new, there is no vaccine until one is developed. It can take a number of years for a new vaccine to be developed.

• One major hitch in developing a COVID-19 vaccine is that no medically proven predecessor exists for any type of human coronavirus.  

we are fast approching experiments to find those vaccines

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hope helped