Well, my personal opinion is that it is quite possible that blood type
may play some role when it comes to abductions, missing 411 cases, like Gawan said, or ethnic specific weapons and other genetic experiments. After all, even in case of COVID-19 Chinese researchers and others found correlation between blood type and susceptibility to getting infected with coronavirus.
At the same time, I would be quite weary of statements that declare that "World government has a huge World database that tracks Rh-negative people." Simply because this kind of project isn't that easy to execute, as it may sound.
For example, I searched for percentage of people in the US who know their blood type, and apparently half of them don't know it. That's already a big missing chunk of data.
Unless, those who wrote the article suspect even bigger conspiracy, where blood samples are collected from everyone, even if they never took blood tests or donated blood. Maybe that's why they site X-Files series as their source of information.
This emotionally loaded statement can be scary, for sure, but the thing is that "they" don't need to collect data of everyone in the World with Rh-negative, or keep a track on them. There are already lots of projects in the works, and data collected, that allow them to get a pretty accurate picture without having
every bit of info.
Here's a map, for example, that shows regions with Rh-negative blood type in Europe:
And
here's a link (in Russian) with more maps (in English).
And
this link in English with a lot of information about blood types, including ancestry or ethnicity.
Also, those who wrote the article are possibly unaware that there is even more mysterious and more rare blood type out there.
When it comes to blood types, you may know A, AB, B, and O—but those larger groups actually contain millions of different varieties.
www.foxnews.com