mRNA booster vaccines may be a good investment in developing countries
Vaccines based on inactivated SARS-CoV-2 virus are commonly used in developing countries due to their low cost. New research from Karolinska Institutet in Sweden shows that a booster shot of mRNA vaccine to individuals who have received two doses of inactivated vaccine offers the same level of protection against COVID-19 as three doses of mRNA vaccine. The findings are published in the journal Nature Communications.“Our results indicate that one booster shot of an mRNA vaccine, as a complement to the cheaper but less effective inactivated vaccines, is sufficient to achieve the ‘gold-