Human ‘challenge trials’ entail risk but they could be our best protection against the next pandemic
Next-generation vaccines in development today could help prevent an outbreak from becoming the next global crisis
![High-risk laboratory workers process Cuban vaccines against Covid-19, in Havana, Cuba](https://cdn.statically.io/img/www.telegraph.co.uk/content/dam/global-health/2024/05/28/TELEMMGLPICT000251938357_17169006284090_trans_NvBQzQNjv4Bq0quQUhCPHdUHY_XWT5Ck7ziIXdNr9atEw2H4ySp7WWI.jpeg?imwidth=350)
Next-generation vaccines in development today could help prevent an outbreak from becoming the next global crisis