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The Chinese Nationalist Party (KMT)-affiliated National Policy Foundation yesterday questioned the safety and effectiveness of COVID-19 vaccine candidates from Medigen Vaccine Biologics Corp, citing a lack of phase 3 trials.
Foundation deputy director Huang Hsin-hua (黃心華) made the remarks in an online news conference a day after Medigen unblinded data from its phase 2 trials.
Although Medigen increased the sample pool of subjects in its phase 2 clinical tests in a bid to secure emergency use authorization, an expanded phase 2 is no substitute for phase 3 trials, Huang said.
The lack of phase 3 studies sets the Taiwan-made vaccines apart from those