: What kind of weird strain is this?

Recently, I saw some strange reactions after some people exposed themselves or their family members on the Internet, and they nicknamed it "XX strain".
I thought it was a joke at first, but it actually happened to me.
Last night, I accompanied my daughter-in-law to get an injection (severe disease means above 39 degrees, not ICU). The doctor is an acquaintance, and the first sentence asked me "have you lost weight?" I didn't weigh myself recently, and I didn't care about it. After looking at his own condition, he confirmed that I was positive and asymptomatic, and it was about the fourth day, and I was about to recover.
After washing and lying on the bed at night, I was suddenly extremely tired and fell asleep in seconds. I felt like I was taking a bath, my hands and feet were extremely hot, and my body was slightly sweaty. It felt like I had taken antipyretics, but I was sure I didn’t take antipyretics.
I woke up at 2:30 and felt refreshed. The neck pain and migraine that had been bothering me recently disappeared. Feel the blood running smoothly all over the body.
Give a thumbs up to my cousin who is a PhD student in Australia, and watch her Christmas party with friends who don’t wear a mask. I’m concerned about the situation of the new crown there. I learned that she also had a similar low-grade fever the next night there, and then Well, I don't know if it is the new crown.
I said that the people in my grandma's house are basically asymptomatic and mildly ill. She said that she had verified it. It seems to be a family inheritance. Now she is rest assured over there. Anyway, all the fallen are international friends. She has been a so far. No.
What strain is this called? Enhanced strain? Weight loss strain? Self-healing strain?
Even the diarrhea that lasted for half a month before being recruited was cured...
Even myopia is still the same, well, a little greedy...
Encyclopedia, asymptomatic is divided into four types, rule out the first strong immunity (I am of ordinary physical fitness), rule out the vaccine (three injections, but everyone knows that this thing has limited effect), rule out the weak immunity (I am ordinary people), leaving only the last one - immune tolerance.
To put it simply, a certain generation of ancestors in my family had a similar coronavirus and was lucky to leave some information fragments in the gene, and loaded a special killing tool in the immune system of future generations, which is only effective against the new crown.
If it weren't for this epidemic, I might never know that my family has such "superpowers" all my life. The dream of the second year of middle school when I was a teenager actually appeared at this time...
I just don’t know if this kind of gene fragment killing can be transferred to others through vaccines or other methods (don’t be shy, I didn’t say DNA), if it can be done, I’m still willing to cooperate with the country to end this epidemic.
But it seems that there is no such black technology.
Of course, the thing that makes me most happy is that my child can finally start school after the holidays...