You can opt out  but only until 23 June. But I want that to be my decision. I certainly would. 'The vaccine rollout could not have been delivered without effective use of data to ensure it reached the whole population. Now youre getting me worried.
The vaccine requires further clinical trials  to verify its efficacy.
( z0 require :ARG0 ( z1 vaccine ) :ARG1 ( z2 try :purpose ( z3 verify :ARG1 ( z4 effective :ARG0 z1 ) ) :mod ( z5 clinical ) :mod ( z6 further ) ) )
(z0 / require-01
    :ARG0 (z1 / vaccine)
    :ARG1 (z2 / try-01
              :purpose (z3 / verify-01
                           :ARG1 (z4 / effective-04
                                     :ARG0 z1))
              :mod (z5 / clinical)
              :mod (z6 / further)))
The vaccine requires further clinical trials to verify its efficacy .
z0 :ARG0 z1
z2 :mod z5
z2 :mod z6
z0 :ARG1 z2
z2 :purpose z3
z3 :ARG1 z4
z4 :ARG0 z1