The study was not set up to look at any differences between the two. It is an important point but we cant at the moment say anything about that, he said. He said the numbers were consistent with a relatively constant protection of about 70% at that stage. The Pfizer/BioNTech was available first so there is more data, but the Oxford/AstraZeneca was mostly used in the older age group. The numbers were very small and there was uncertainty over their significance, said the researchers.
This statement was written in 2019.
( z0 write :ARG1 ( z1 thing :ARG1-of ( z2 state ) :mod ( z3 this ) ) :time ( z4 date-entity :year 2019 ) )
(z0 / write-01
    :ARG1 (z1 / thing
              :ARG1-of (z2 / state-01)
              :mod (z3 / this))
    :time (z4 / date-entity
              :year 2019))
This statement was written in 2019 .
z1 :mod z3
z1 :ARG1-of z2
z0 :ARG1 z1
z0 :time z4
z4 :year 0