Neutralizing antibody titers induced by the 3·0 μg dose were higher than those of the 1·5 μg dose.
While AstraZeneca claimed that the vaccine was 70-percent effective, it was later disclosed that the effectiveness was in people who received two full doses, and closer to 90 percent in people who received one half and one full dose.
Around 332,877 vaccines on average were administered daily in the last week, Umar added.
All participants received at least one dose of the vaccine or placebo.
President Duterte said the Chinese donation underscored the friendly relations between Manila and Beijing.
He was not given an option to have his antibody levels tested, but said he would consider taking another shot if his counts were low.