Chilean tree now holds hope for new vaccines - if supplies last

 

A mature quillay tree, which is native to Chile and contains a substance that can be used in Covid-19 vaccines, is seen at a nursery operated by US-based Desert King International, in Casablanca, Chile in April. [Reuters]

Down a dusty farm track in Chilean wine country, behind a wooden gate wrapped in chains, forestry experts are nursing a plantation of saplings whose bark holds the promise of potent vaccines.