Malathion is a pesticide that is widely used in agriculture, residential landscaping, public recreation areas, and in public health pest control programs such as mosquito eradication. In the US, it is the most commonly used organophosphate insecticide.
The average incubation period for the flu is 2 days, but it can last anywhere from 1 to 4 days in healthy adults.
What To Expect. The typical flu incubation period is between 24 hours and 4 days, with the average being 2 days. What this means is that if you are exposed to the influenza virus and become infected, you will start to experience flu symptoms anywhere between 24 hours and 4 days after the exposure. Flu symptoms generally don't come on gradually.