Are the Covid-19 vaccines 100 per cent effective? Here's what Pulmonologist has to say

According to Dr Sheetal Chaurasia, every vaccine should have minimum 50% of efficiency. And, the Covid-vaccines have shown 70-90% during the trials. But she is not sure that it will be as effective among the community as it was during trials. She says, " It's a good idea to keep maintaining social distancing, wearing masks even after vaccination."