This period is referred to as the flu season. But once you get the virus, how long does it take to start feeling flu symptoms? This period of time is known as the incubation period. The incubation period of the flu is usually between one and four days. While the general incubation period for the flu is usually between one and four days, this period can vary from person to person. The average incubation period for the flu is two days. This means that, on average, people start to develop flu symptoms about two days after coming into contact with the influenza virus.
They also typically develop in stages, with certain symptoms emerging as the infection progresses. But there are differences in the onset, severity, and duration of the typical cold or bout of influenza. A cold can be caused by more than distinct viruses, according to the Centers for Disease Control and Prevention CDC, while there are only a handful of viruses that cause the flu. The flu is usually more intense than the common cold, says the CDC. Cold symptoms tend to develop gradually, while flu symptoms can come on suddenly, without warning, per the CDC.
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It can make diabetes, heart failure, and lung problems such as asthma worse. December 1, A few feel well enough to return to work or school. The average incubation period for the flu is two days.