Around half of the human genome is composed of DNA fragments originating from ancient viruses. These “transposable elements” (TEs) are now known to play various roles in modulating gene expression and disease development.
50 years of lifesaving vaccinations: WHO’s EPI saves 154 million lives
The World Health Organization’s Expanded Programme on Immunization (EPI) has prevented 154 million deaths since 1974, significantly reducing global infant mortality and contributing 10.2 billion