The Swine Flu, H1N1, is a growing pandemic threat. <strong>How long is it from the time of exposure,</strong> until the time that symptoms appear, and also, to the time of contagion?
How long can influenza virus remain viable on objects (such as books and doorknobs)?
Studies have shown that influenza virus can survive on environmental surfaces and can infect a person for up to 2-8 hours after being deposited on the surface.