HONG KONG (REUTERS, BLOOMBERG) – People vaccinated against Covid-19 with BioNTech’s vaccine were found to have “considerably higher” antibody levels than those who received the Sinovac vaccine, South China reported Morning Post Saturday, June 19, citing a study from Hong Kong.

Some of those who received the Sinovac vaccine may also need a third booster, the newspaper said, citing lead researcher Benjamin Cowling, an epidemiologist at the University of Hong Kong (HKU).

The government-commissioned study was conducted by the HKU School of Public Health and involved monitoring the antibody responses of 1,000 people who received either vaccine, the report added.

Professor Cowling warned that antibody tests might fail to detect small amounts of antibodies generated by Sinovac jabs.

Earlier this week, Indonesian officials warned that more than 350 medical workers had caught Covid-19 despite being vaccinated with Sinovac and dozens had been hospitalized, raising concerns about its effectiveness against more infectious variants of the virus .

Earlier in June, Uruguay released actual data on the impact of Sinovac Biotech’s Covid-19 vaccine on its population, which showed it to be over 90% effective in preventing intensive care admissions and deaths.

The Uruguayan government also studied the effectiveness of Pfizer-BioNTech’s vaccine in 162,047 health workers and people over the age of 80, and said the vaccine was 94 percent effective in preventing unit admissions and deaths. intensive care, and to reduce infections by 78 percent.