Tonix Pharmaceuticals has reported preliminary positive results after vaccinating primates with TNX-1800, a live modified horsepox virus vaccine for percutaneous administration designed to express the Spike protein of SARS-CoV-2 virus and to elicit a predominant T cell response.
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US-based Altimmune has reported that additional preclinical data on its single dose intranasal Covid-19 vaccine candidate, AdCOVID, showed 100% protection against lethal challenge from the SARS-CoV-2 virus, and reduction in viral replication.
The World Health Organization (WHO) has issued Emergency Use Listing (EUL) for the single-dose Covid-19 vaccine, developed by the Janssen Pharmaceutical Companies of Johnson & Johnson (Janssen) for individuals aged 18 years and above.