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The study showed that although the two doses Kerr fu ® 6 months after antibody levels decline, but due to the generation of immune memory, a second dose vaccination antibody levels after 8 months significantly increased the third dose of vaccine inoculation, and Shows good safety.

Third doses of vaccine induced in adults of all ages in high titers of neutralizing antibodies showed that Kerr blessing ® can produce a good immune memory to complete the two Kerr blessing ® vaccination after 8 months 

With three doses, the neutralizing antibody titer against the new coronavirus can be increased to 3 to 5 times after the second dose of vaccination, and at the same time shows good safety. It brings hope that people all over the world who have been vaccinated or will be vaccinated with the inactivated COVID-19 vaccine will be protected.

http://www.sinovac.com.cn/news/shownews.php?id=1357

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https://ir.ocugen.com/news-releases/news...-generates