Citizens who have completed both doses of the Beijing-made Sinovac vaccine should take the German-made BioNTech/Fosun shot as a booster for better protection, top microbiologist Yuen Kwok-yung said. Yuen said the results proved high risk groups, including elderly people and those with weaker immunity, should take the BioNTech jab as a booster, and added that his team will soon publish a journal on the trial. Yuen said he was worried about the current vaccination rate in Hong Kong -- 70 percent have taken at least one dose. "One way is the nasal spray vaccine, which is scheduled to start its third phase of clinical trials overseas soon. The other is a combination of vaccines, and mixing the use of different vaccines can complement each other to achieve better immunity, and the adverse reaction is not prevalent," Yuen said.

Source: The Standard November 21, 2021 23:03 UTC