Hi, nOOble, and welcome to the forum. What site made this claim? I would only go to recognized sites, such as the American Liver Foundation, for info. Better still, go to a hepatologist, especially if you are a carrier. However, from what you posted, if the virus does survive for 30 days outside the body, it certainly follows that it would be infectious. We have a few people on this forum who have hep B, or are caretakers for those with HBV. Perhaps they can give you some more definitive answers.