Experts Fear Hampered Results Over AstraZeneca's Manufacturing Mishap

Discrepancies in the manufacturing process of AstraZeneca - Oxford COVID-19 vaccines have raised concerns about its efficacy. Reportedly, researchers stated that due to the error, a group of volunteers had taken vaccines with lower dosage as compared to others. The error has led to ambiguity as experts fear hampered results. However, the vaccine makers have maintained that its efficacy is intact.