Preparations for vaccinating billions are underway. What are the challenges?
- Transporting vaccines from manufacturing sites to everywhere they’re needed would be a huge undertaking. By one estimate, airlifting single-dose regimens to protect the world’s population would require the space in about 8,000 cargo planes
In the quest to develop shots against Covid-19, researchers have overcome challenges that typically make vaccine projects stretch across years if not decades. Assuming one or more of their experimental vaccines proves safe and effective in late-stage trials -- a huge feat in itself -- drug companies and health officials will next face a whole new set of obstacles in their effort to deliver the shots widely around the world. Preparations for vaccinating the planet’s 7.8 billion people are already underway.
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