'It will take time. Reporting by Renju Jose; Editing by Sam HolmesOur Standards: The Thomson Reuters Trust Principles. He said some people's immune systems won't take to the vaccine fully and if the vaccine isn't properly stored its effectiveness may be reduced. Vaccinations will begin with doses from Pfizer Inc (PFE.N), officials have said, with the AstraZeneca PLC (AZN.L) vaccine expected to be in use by March-end. 'But they will still get some protection.'
I bought a flu vaccine from the pharmacy.
( z0 buy :ARG0 ( z1 i ) :ARG1 ( z2 vaccine :mod ( z3 disease :name ( z4 name :op "influenza" ) ) ) :ARG2 ( z5 pharmacy ) )
(z0 / buy-01
    :ARG0 (z1 / i)
    :ARG1 (z2 / vaccine
              :mod (z3 / disease
                       :name (z4 / name
                                 :op1 "influenza")))
    :ARG2 (z5 / pharmacy))
I bought a flu vaccine from the pharmacy .
z0 :ARG0 z1
z3 :name z4
z4 :op1 0
z2 :mod z3
z0 :ARG1 z2
z0 :ARG2 z5