One phrase that is often used in this context that of âpresenting a proposition as trueâ (cf. 1  Wright 1992: 34). Prima facie, it characterizes assertion well. However, there are two problems with the idea. The first is that it should generalize to other speech act types, but does not seem to do so.
The typical flu incubation period is between 24 hours and four days, with the average being two days. This means that if you are exposed to the influenza virus and become infected, you will start to experience flu symptoms anywhere between 24 hours and four days after the exposure. Another factor that contributes to how the flu spreads is when exactly you may be contagious.
People also catch the flu by touching surfaces with the virus on them and then touching their eyes, nose or mouth. After exposure to the flu virus, many people begin to experience symptoms within one to seven days. The flu often spreads rapidly within groups, reports MedlinePlus. Once it arrives in a school, students get sick within two to three weeks. A high fever, between 102 and 106 degrees Fahrenheit, is often the first sign of the flu.