Question

what could be possible reason for delay of covid-19 drug/ vaccine?​

Answer 1

Answer:

according to my opinion I think world war three has began

and China is using this virus as a biological weapon and then release the virus after 60% of the world has been wept out

follow my instagram account and dm me for more information

Explanation:

Answer 2

Covid-19 is caused by coronaviruses that are totally new to all.

Actually they are not a particular type of virus they are a group of various types of viruses. Resolving all its properties and making out a vaccine is a quite difficult task.. So,  This may be the possible reason of delay of Covid-19 vaccine.

                                                                                     

HOPE THIS HELPED YOU..