FYI Audenz is not egg-based - it's made in cells: https://www.precisionvaccinations.com/vaccines/audenz-avian-influenza-vaccine
Glad that you enjoyed it.
You are right on both counts. This is quite an easy overview of meta-research if you want a starting point: https://journals.plos.org/plosbiology/article?id=10.1371/journal.pbio.2005468
The link above no longer works but is available here