Covishield (AstraZeneca-Oxford) vaccine has an efficacy rate of around 70% which isn't impressive at all. Indian government should opt for Moderna or pfizer vaccine having 95% efficacy. Even the much ridiculed Sputnik has an efficacy rate of 90% then why government is going with Covishield is beyond my understanding. If you can invest 1000 crores on new Parliament building then why compromise with the vaccine just bcoz of price issues.