コロナワクチンは何が起きるか分からないので不安ですの英語

a vaccine made of a {tubercle bacillus called Maruyama vaccine}

I was afraid of what would happen next.

a vaccine called varicella vaccine

You never know what will happen.

There is no telling what will happen.

an oral vaccine called {Sabin Vaccine}

I can see what will happen

The situations are changing so rapidly that no one can predict what will happen hereafter.

The vaccine turned out to not have enough immunogenicity later on.

What is the percentage of unvaccinated children?

the scar left following inoculation with a vaccine

killed bacteria used in a vaccine

a vaccine used for tuberculosis prevention, called BCG vaccine

a method preventative medicine called vaccination

being dangerous

One can not say what will come out before it begins.

There is no knowing what may happen.

I have no idea what happened there.

I have no idea how it will turn out [what the result will be].

She turned out to be a non-responder to the vaccine.

There is no telling what may happen next.

I don't know what or when something will happen.

I'm studying to develop a vaccine for cytomegalovirus.

I don't know what will become of the boy.

I haven't figured out what is happening.

not certain to occur

vaccine made by mixing several kinds of vaccine

live vaccine

surprisingly knowledgeable about what was going on

a poisonous substance, containing a virus, used for protecting people against disease