Question

if u are making vaccine from dna of any virus? than why that vaccine didnt harm us..for example..uk make a vaccine named Pfizer, for corona virus from the dna of corona virus..than why that vaccine doesn't cause any harm in our body? what is the reason behind this..​

Answer 1

Answer:

because it is an antidote

Answer 2

Answer:

a) Due to lack of technology

b) Less research about vaccine

c) Less experience scientist

d) May be money problem

e) we can't ues vaccine without trails Minimum 3 or 4 trails

Explanation:

thanks..

i hope it's helpful to you... if my answer is incorrect then sorry...