Stop using isotretinoin and call your doctor at once if you have any of these serious side effects: 1  depressed mood, trouble concentrating, sleep problems, crying spells, aggression or agitation, changes in behavior, hallucinations, thoughts of suicide or hurting yourself; 2  sudden numbness or weakness, especially on one side of the body; 3  blurred ...
A person infected with norovirus is contagious from the time the symptoms manifest to about three days after recovery. This means that a person infected with this virus may remain contagious for almost a week.Reports suggest that once contaminated, norovirus can survive on the surface for about 48 hours, though it is readily disinfected by chlorine based disinfectants or by heating.The virus continues to be shed via stools, almost two weeks after recovery. person infected with norovirus is contagious from the time the symptoms manifest to about three days after recovery. This means that a person infected with this virus may remain contagious for almost a week.
Most flu viruses can live one to two days on nonporous surfaces, and 8 to 12 hours on porous surfaces. But a 2006 study found that avian influenza seemed particularly hardy, surviving as long as six days on some surfaces. Continue reading the main story.HE BOTTOM LINE Flu viruses tend to survive longer than cold viruses. Credit Christoph Neimann. scitimes@nytimes.com. A version of this article appears in print on December 15, 2009, on page D5 of the National edition with the headline: Flu viruses live longer on surfaces than cold viruses.