The amount of Covid-19 antibodies in trial subjects who received China’s experimental vaccines remained high six months after the first shots, said a top Chinese scientist, projecting confidence that the country will be among the first to produce effective inoculation against the coronavirus.
The high levels detected in volunteers who took part in the earliest clinical trials suggest that the shots are effective and can provide immunity against the virus for an extended period of time, though final-stage testing results still need to be evaluated, Zeng Guang, chief scientist of the Chinese Center for Disease Control and Prevention, said in a briefing in Beijing on Friday.
Tianjin-based CanSino Biologics Inc, which is co-developing a coronavirus shot with the Chinese military, was the first in the world to administer an experimental vaccine into healthy people in March, though Zeng did not specify which vaccine candidate he was referring to.
China now has at least 10 vaccine candidates in human trials, with four in the final stages of Phase III testing around the world.
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