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Only a few weeks ago, Anglo-Swedish pharmaceutical giant AstraZeneca was being applauded for the speed with which it developed its COVID-19 vaccine.
Experts heralded the launch of the jab as a turning point in the pandemic, not least because it can be transported and stored more easily than its Pfizer/BioNTech counterpart.
The Anglo-Swedish firm also won plaudits for promising to provide the vaccine on a non-profit basis to lower- and middle-income countries.
Now the vaccine has become a headache, with questions about its