>This would require global collusion and conspiracy No it wouldn't. It would only require incentive for profit. If a company makes a highly durable vaccine, it

>This would require global collusion and conspiracy No it wouldn't. It would only require incentive for profit. If a company makes a highly durable vaccine, its competitors wouldn't make very much money, but neither would the company itself. Less profit. Make a vaccine that wears off after a slightly longer time than your competitors, and you can claim to be the best product on the market while keeping your users coming back for more. Guaranteed ongoing revenue stream. 'Conspiracy' is a loaded term that is used solely to discredit the opposing argument.