Tramp Charlie finds an abandoned baby and takes it under his wing. A few years later, the two are a strong team: The toddler shoots rows of windows, Charlie provides a replacement in his job as a glazier. [The Kid (1921) - Film]
The principle is apparently so revealing that I can neither find it in the Wikipedia film description nor as an iconic photo in the image search for the film.
With these recurring waves of Covid infections, I now have a picture in my head of virus pollinators running through the country.
How do we get out of such a blackmail trap?
Just by taking the pharmaceutical industry into public hands? Eventually there are garage laboratories run by hobby cell- and gene-researchers.
But it is dangerous when vaccines only come from a single source.