Hi scientist here, I actually ran a study during my cursus about this and i didn’t find any significant difference between ‘dangerous breeds’ and others. The literature I found confirmed this hypothesis. If you have an article confirming this fact i would gladly appreciate it. If necessary i can give you some articles to read. As far as I’m aware it does not appear to be a fact.
I like how the summary conveniently avoid mentioning the fact that in the year 2023 30000 visa were given to chinese students. Its quite sad how most people dont bother reading the article. As per the article: “The number of people affected is a tiny fraction of the total number of Chinese students in the US. The State Department issued nearly 300,000 visas to Chinese students in the year to September 2023. But the personal accounts speak to a broader concern that people-to-people exchanges between the world’s two biggest economies and scientific leaders are straining.”