For example there’s this from the Lancet

“Although attention has focused on vaccine efficacy and comparing the reduction of the number of symptomatic cases, fully understanding the efficacy and effectiveness of vaccines is less straightforward than it might seem.” Source: https://www.thelancet.com/pdfs/journals/lanmic/PIIS2666-5247(21)00069-0.pdf

Here it quotes the NNV of 119 for Pfizer which means you need to vaccinate 119 people to prevent 1 person from a symptomatic case. If NZ were to vaccinate the team of 5 million this will prevent 42,000 symptomatic cases.

If we were to apply the Case Fatality Rate to the 42,000 cases we can work out how many people’s lives this would save. The CFR for the UK is currently, 0.26% which works out to 109 lives that would be saved if 5 million people were vaccinated. NZ CFR since 16th February is 0.09% which works out to be 38 lives saved if we were to vaccinate 5 million people. On average the lives saved will be those who have reach life expectancy and above and those with one or more comorbidities.

The next question to ask is how many adverse reactions including deaths will be caused by vaccinating 5 million people?