SO misleading. What this research shows is that some viruses can contribute to obesity. Oooo, wow, that's big news! not.
Some viruses suppress appetite. Some cause rapid weightLOSS. Some cause a condition known as hotdog fingers.
Unless they have a test for the viruses which DO cause weightgain then this whole thing is pointless. We KNOW for a fact that weightgain is caused by intake of calories in excess of those expended. That simple. All these viruses might do is:
1) Decrease resting energy expenditure
2) Increase appetite
3) Encourage the storage of fat or encourage the burning of carbohydrates instead of fat.
So really no matter what, it all comes down to diet and exercise. All it means is some folks might have to pay closer attention. It doesn't however change the fact that in order to MAINTAIN a weight of 400 pounds you have to ingest an ungodly disgusting amount of food constantly AND spend every moment of your life virtually immobile.
Translation: if you are fat, it is STILL your fault.