not really, usually there is less competition for developing vaccines as the timelines are more relaxed and it would be a waste of money to have several groups

not really, usually there is less competition for developing vaccines as the timelines are more relaxed and it would be a waste of money to have several groups discover the vaccines to the same disease Multiple different vaccines could (and probably will) be discovered. These may have different mechanisms and tradeoffs and those too will be taken into account when scaling up to population. Now who owns what, who gets it first, and who gets paid and in what way, those are thorny issues that have not yet been worked out.