Aug 1, 2007 (cidrap news) a mayo clinic study indicates that many hospitalized influenza patients shed flu virus for at least 7 days after they fall ill, suggesting that the current recommendation to use infection control precautions for 5 days may be inadequate.. Long answer: sounds like you�re worried about �vaccine shedding�. let�s first discuss what �viral shedding� is. when someone gets sick with a virus, they become contagious and can spread the virus to someone else.. When infected individuals shed large quantities of virus, researchers predict widespread flu, as shed quantity is a proxy for infectiousness. shed pattern indicates how long individuals are able to �share with others,� and linking symptomatology to shed pattern helps predict the average duration of illness..
The concern in any of these cases is viral shedding, in which someone becomes contagious and can pass a virus to someone else. when you get sick with a cold, the flu, a cold sore, or any other contagious disease, it is not uncommon that you spread it to other people by shedding the virus or bacteria that is making you sick.. The influenza virus, also known as the common flu, is a highly contagious respiratory virus that affects all age groups. the virus has a different effect on every person, and symptoms can range. The emerging risks of live virus & virus vectored vaccines: vaccine strain virus infection, shedding & transmission nvic referenced report � nov. 2014, page 2 table of contents can people receiving live virus vaccines transmit vaccine.