BioCentury
ARTICLE | Product Development

A guide to COVID-19 vaccine modalities in the clinic

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May 9, 2020 4:32 AM UTC
Updated on May 11, 2020 at 9:30 PM UTC

Of the more than 90 vaccines in development for COVID-19, at least nine -- spanning nucleic acid, viral vector-based and inactivated vaccines -- are in clinical testing.

During infection with SARS-CoV-2, the host proteins ACE2 and TMPRSS2 mediate entry of the virus into the cell by binding the virus’ spike protein, which has emerged as the principal target for vaccination strategies. The host proteins are also targets of at least five therapeutic programs. ...