By PPN News Staff
The Moderna messenger RNA (mRNA) vaccine against COVID-19 appears to be effective against the variant virus strains, including the new Delta variant first identified in India. However, the efficacy is less than against the original SARS-CoV-2.
The company conducted in vitro neutralization studies of sera from individuals vaccinated with its COVID-19 vaccine, which showed that the vaccine produced neutralizing titers against all variants tested, including additional