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The current global coronavirus disease 2019 pandemic has shown us once again how important vaccination is in controlling and preventing the spread of deadly diseases. Vaccinations are one of the most tried and tested public health measures aimed at the prevention and eventual eradication of various diseases. Many debilitating diseases like polio have been eradicated in countries like India due to effective vaccination strategies. Just like with any other public health initiative, there do exist various challenges for vaccination. Efficacy and correlate of p