Bring 2 cups juice to a boil in a small saucepan over high heat. Meanwhile, pour water into a large heatproof bowl. Sprinkle gelatin over the water; let stand for 3 minutes. Add the juice and stir to completely dissolve the gelatin, 2 to 3 minutes. Add sugar and stir for 1 minute to dissolve.
Gastroenteritis (often referred to as the stomach flu , however, it is not related to the influenza virus. Gastroenteritis is a nonspecific term for various inflammatory problems in the gastrointestinal tract with the most common symptoms and signs being diarrhea, nausea, vomiting, and abdominal pains.s previously mentioned, although it is not caused by influenza viruses, gastroenteritis is commonly referred to as the stomach flu because most people have acute symptoms that last a day or so, and then begin to resolve, like the symptoms of more benign flu strains.
1 Stomach symptoms. 2  Many strains of influenza B will cause irritation in the stomach. 3  Because this is so common, this particular type of flue is often referred to as a stomach flu though the virus does not specifically affect the stomach. 4  Stomach symptoms include nausea, loss of appetite or vomiting.