You didnt answer the vaccine question, nor the rate of growth topic, look at the chart again, it looks more exponential than linear: https://i.stack.imgur.com/

You didnt answer the vaccine question, nor the rate of growth topic, look at the chart again, it looks more exponential than linear: https://i.stack.imgur.com/2928N.png https://i.stack.imgur.com/2928N.png