Interview
This vaccine could stop the next pandemic | The Economist
- Universal coronavirus vaccines introduced at the onset of a pandemic could potentially save millions of lives and facilitate continued social openness before strain-specific vaccines are developed.
- Scientists plan to administer broad-spectrum vaccines alongside specific vaccines targeting individual strains, particularly during severe seasonal outbreaks.
- While broader coverage from universal vaccines may be less effective against specific variants compared to targeted vaccines, the duration of this protection remains uncertain.
- Research indicates the innate immune system can be "trained" via epigenetic changes, such as those induced by BCG vaccines, to maintain heightened alertness for extended periods; this concept has evolved over approximately 15 years.
- Studies in mice suggest broad-spectrum vaccines could defend against viruses, bacteria, and allergens, representing a potential future application, though the feasibility of a single vaccine covering all three categories remains unproven in humans.
- Significant challenges exist in translating mouse findings to human populations due to differences in immune system diversity, environmental exposure, and a more complicated genetic baseline.
- Future development is constrained by current limited knowledge of the immune system and the significant uncertainty regarding whether animal model results will apply to humans.