I wonder what kind of reaction would trigger the infection. Would you be alright if you simply ignore people harming themselves and just try to avoid them? Or would the action of avoiding them itself also constitutes as “reaction”? So that’s why people still carry out their daily routine like taking bus to work despite the apocalypse happening around them? Damn, it will be really hard to keep this up if the only way to survive is to keep going to work like nothing happened, and can’t act in anyway out of ordinary (like hoarding food or actively avoiding people)