New realities are imposing themselves, demanding different approaches to disease surveillance and vaccine development.
![A person receives a dose of the Oxford-AstraZeneca coronavirus disease (COVID-19) vaccine at the National Hospital in Abuja, Nigeria, on March 5, 2021 [Afolabi Sotunde/Reuters]](https://www.aljazeera.com/wp-content/uploads/2021/03/nigeria-2.jpg?resize=270%2C180&quality=80)
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New realities are imposing themselves, demanding different approaches to disease surveillance and vaccine development.
