Animal trials of COVID-19 nanoparticle vaccines show promising results China


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GUANGZHOU, Nov. 27 (Xinhua) -- Two new nanoparticle vaccines for SARS-CoV-2, the virus that causes COVID-19, can elicit potent neutralizing antibodies and cellular immune responses in animals, sources with the Guangzhou-based Sun Yat-sen University said Friday. The university researchers formulated two nanoparticle vaccines based on the receptor binding domain and heptad repeat of the SARS-CoV-2. They could induce a high level of antibodies against COVID-19 in mice and rhesus macaques, presenting a promising vaccination approach against the virus. The results of the animal tests were published this week in the international journal Immunity. Lead researcher Zhang Hui said the nanoparticle...