Strong swine influenza virus toxicity when transmitted to humans

Transporting pigs from one place to another makes swine flu viruses more and more diverse.

This study (the oldest on the virus strain) by researchers at Duke-NUS School of Medicine (Singapore) shows that large flu viruses cross national borders and combine with native viruses, creating into new strains of virus.

"The risk of virus infection from pigs to humans has not increased significantly, but the diversity of swine flu viruses is increasing rapidly," said Dr. Vijaykrishna Dhanasekaran of Duke-NUS school said.

This means that people are increasingly exposed to many viruses, which can lead to an increased risk of infection from pigs to humans, although this risk has not been clearly defined.

The spread of A. influenza virus (Source: Medicalxpress ).

According to Vijaykrishna, transporting pigs from one place to another may be the cause of the increasingly diverse strains of the virus. ' Most of the virus strains collected so far are from captive pigs in Asia, Europe and North America and some samples were collected from pigs raised. There is no information on whether or not this strain of influenza will develop in natural pigs or domestic pigs . "

The study looked at from the perspective of epidemiology, genes and antigenic properties of swine flu virus in Hong Kong from 650 virus samples taken from pigs, more than 800 blood samples of pigs in 12 years of study and 34 years of collecting data. Other materials about pigs.

Research shows that two strains of H1 virus and H3N2 virus often combine and create many other strains of virus, including some strains of avian influenza virus. These viruses often do not cause (or cause little) symptoms in pigs. Currently, scientists have not yet figured out why their toxicity is so strong when they infect humans.