. Conclusion:IFITM3 rs12252 CC genotype was associated with severity rather than susceptibility of IVI in Chinese population, and this strong effect was observed in all subtypes of seasonal influenza infection
https://www.immunology.ox.ac.uk/publications/709564
so after snoping around in biochemistry of which I Have no understanding
The Chinese have an issue with IFITM3. If some Evil empire wanted to develop a bioweapon to target the Chinese they might look to that.
Chinese might worry about that and do experiments with Bats and IFITM3 for whatever reason. They have done studies with bats and pigs and IFITM3.
The US is seeing a lot of deaths but not like China...for a variety of reasons.
None of this is very helpful to determine what to do if your IfITM3 has been monkeyed around with by the virus.\\\
“From these findings, the researchers speculated that when IFITM3 is not fully functional, the immune system might be forced to cope with a much larger viral load, upping the chances of severe infection. Once they are let loose in host cells, viruses also have the chance to tinker with immune system components that help recognize viruses, Brass noted.