14 released a new study shows a number of influenza A H1N1 influenza first appeared in patients with flu-like symptoms after a week or more likely will be transmitted influenza viruses.

Quebec, Canada, Institute of Public Health researchers Jiasidunde Caceres that day in a microbiology meeting, to submit their report of this study.

Deseleisi, said: "This study shows that transmission of infection may be more than your 1 day or 2 days, you may be in about a week time, flu viruses can be transmitted."

reports that the "test" a flu patient will infect others, relatively in terms of fever, cough may be a better judge of indicators.

until health officials cautioned that patients with fever, flu symptoms disappeared within 1 day after to avoid contact with other people. And this latest research shows that they may need to maintain attention longer, especially with family members.

U.S. Centers for Disease Control and Prevention Influenza Nancy Cox officials said, in view of influenza A H1N1 influenza virus now so widely spread, isolation of patients with moves seem ineffective in preventing transmission of the virus.

"We tried to in the guidelines, taking into account all these factors," she said, "but virtually impossible to prevent the virus spread to schools, universities and other places."