Accompanying Symptoms. You can usually determine that your aching teeth are related to the flu and sinus rather than dental care by looking out for other symptoms. Sinus toothaches usually come with tenderness in the cheekbone and gums, throbbing headache, fatigue, and a runny nose.nlike a common cold, the flu is caused by an influenza virus that infects the airway tract in the nose and throat. Symptoms of the flu can include fever, weakness, coughing, headache, and achesâsometimes even in the teeth. 1  Things That Make Toothaches Worse. 2  How to Alleviate Tooth Pain Caused by Sinuses.
1 Rotavirus. 2  Symptoms of rotavirus â the leading cause of viral gastroenteritis in infants and young children â usually appear one to three days after exposure. 3  But you're contagious even before you develop symptoms, and up to two weeks after you've recovered.he contagious period â the time during which a sick person can give the illness to others â is slightly different for each virus. 1  Norovirus. 2  With norovirus â the most common cause of viral gastroenteritis in adults and children â you're contagious from the moment you begin to feel ill.
When a person becomes infected with stomach flu, the virus begins to multiply within the small intestine. After approximately 1 to 2 days, depending on the virus, stomach flu symptoms can appear. This period between the stomach flu transmission and the start of symptoms is the stomach flu incubation period..In some cases, the stomach flu incubation period can be as short as 4 hours.or example, with a rotavirus infection, the person is contagious during the stomach flu incubation period. This person is also contagious while experiencing stomach flu symptoms. Once the diarrhea has ended, a person with rotavirus gastroenteritis is no longer contagious.