Without COVID-19 vaccines, the SARS-CoV-2 coronavirus would have claimed 2.533 million more lives worldwide from 2020 to 2024. This is the conclusion of a study conducted by the Catholic University of Milan and Stanford University in California in a more comprehensive assessment of the impact of the immunization campaign on global public health.
According to the study, COVID-19 vaccines have saved a total of 14.8 million life years worldwide (one life year saved for every 900 vaccine doses administered), in the period from the end of 2020 to October 2024, even after the official end of the pandemic, p/.
The study, published in the scientific journal JAMA Health Forum, states that one life was saved for every 5,400 doses of vaccine administered. 90% of the deaths avoided were in people over 60, while 57% of the lives saved occurred during the Omicron variant. The majority of the lives saved were in those who were vaccinated before infection with the virus.
Children and adolescents accounted for 0.01% of lives saved, and young adults aged 20 to 29 accounted for 0.07%.
The study highlights that vaccines have had a continued impact on protecting susceptible people, even after the WHO declared the end of the emergency in May 2023.
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