Four of them are from China. Sinovacs vaccine is among the three experimental COVID-19 vaccines China has been using to inoculate hundreds of thousands of people under an emergency use program. Work has even begun on a plant capable of producing 100 million doses a year. FILE PHOTO: A man works in the packaging facility of Chinese vaccine maker Sinovac Biotech, developing an experimental coronavirus disease (COVID-19) vaccine, during a government-organized media tour in Beijing, China, September 24, 2020. FILE PHOTO: A man works in the packaging facility of Chinese vaccine maker Sinovac Biotech, developing an experimental coronavirus disease (COVID-19) vaccine, during a government-organized media tour in Beijing, China, September 24, 2020.
Safety issues with the vaccine are that it may be dangerous.
( z0 issue :ARG0 ( z1 safe ) :ARG0 ( z2 endanger :ARG0 ( z3 vaccine ) :ARG1-of ( z4 possible ) ) :ARG1 z3 )
(z0 / issue-02
    :ARG0 (z1 / safe-01)
    :ARG0 (z2 / endanger-01
              :ARG0 (z3 / vaccine)
              :ARG1-of (z4 / possible-01))
    :ARG1 z3)
Safety issues with the vaccine are that it may be dangerous .
z0 :ARG0 z1
z0 :ARG1 z3
z2 :ARG1-of z4
z2 :ARG0 z3
z0 :ARG0 z2