> The disunity of nationalistic selfishness has struck our species once again.
Let's unpack that.
Is what you describe a species specific phenomenon i.e. biological in origin? I'm not sure how you'd determine that question, if what you are talking about is "attitude to vaccine inoculation to stave off pandemic spread", since that behaviour is limited to one species, and is fairly recent.
Is what you describe a species wide phenomenon i.e. biological in origin? What does the data from different nationalities tell us? Does the phenomenon occur similarly in all nationalities, or only some?
Is the phenomenon biological in nature, or might it be cultural? Is it even widely held amongst individuals, or might it originate from some other level of organisation e.g. government, media? How would you investigate these questions?