Our store had eggs from at least 3 different farms. We used to buy 2 different but there was at least 1 more (maybe even more).

Out of a sudden their wellbeing needs to be taken care of. All 3 sources.

I was concerned they’ve got an idea to help hens with a miraculous gene therapy, so I just checked:

Problem:

https://www.thegrocer.co.uk/eggs-and-poultry/egg-sector-urged-to-remain-vigilant-as-bird-flu-restrictions-end/678206.article

Reaction:

https://www.dailymail.co.uk/news/article-11985629/Royal-fans-hit-King-Charles-coronation-quiche-amid-national-egg-shortage.html

Solution:

https://www.bbc.co.uk/news/uk-wales-65299311

Not sure if these are best examples but the problem seems to be created for the final solution to be required and applied.

That's what I wanted to point at: vaccination of animals / food.