There is evidence that before you develop symptoms, people with the flu are more likely to have social interactions: https://www.psychologytoday.com/us/blog/dar

There is evidence that before you develop symptoms, people with the flu are more likely to have social interactions: https://www.psychologytoday.com/us/blog/darwins-subterranean-world/201801/does-the-flu-trick-people-being-sociable https://www.psychologytoday.com/us/blog/darwins-subterranean...