So lots of forms of problem-solving benefit from an incubation period where you take a pause between when you hear the problem and when you start working on it.
The reason this is a standard of practice is because… measles has a long incubation period, meaning it can take a while for you to be exposed and have symptoms.
In general, infected people are most contagious starting from the final day of the incubation period through the prodromal and exanthem phase, which roughly works out to be 4 days before to 4 days after the onset of the rash.
It's increasingly clear that a lot of the spread is occuring through presymptomatic people, folks that are in the incubation period, many of whom are not at high risk themselves.
Meantime, he says the close contacts of the virus patients will be fine if they do not fall sick after the virus incubation period that ranges from 10 to 14 days.