All those suspected cases tested negative in PCR. If there was a significant proportion of them that was actually positive, it would mean the PCR tests, applied everywhere are broken and infection rates would in reality be massively higher, even though this is not in line with anti-body results."19% or 95%? US expert challenges Pfizer vaccine's efficacy, triggers debates in China."
"Questions raised by Peter Doshi, an assistant professor of pharmaceutical health services research at the University of Maryland School of Pharmacy, have triggered heated discussion on Chinese social media."
"Doshi on January 4 released an article on a blog platform under the UK pharmaceutical journal The BMJ, questioning Pfizer's efficacy rate."
"Pfizer revealed that it discovered 170 PCR confirmed COVID-19 cases during the phase III clinical trials and 3,410 suspected cases in total."
"However, if taking these suspected cases all as confirmed ones, the Pfizer vaccine's efficacy would be dramatically reduced to 19 percent. Even after omitting cases occurring within seven days of vaccination, which should include the majority of symptoms due to short-term vaccine reactogenicity, the efficacy rate remains as low as 29 percent, Doshi said in the article."
"Doshi also questioned the standards of how Pfizer excluded cases and the influence of the use of medication on the vaccine's efficacy."