The malicious evolution of avian influenza virus seeks to spread to people

Introduction: the case pattern of human avian influenza in Vietnam from January to April shows that the World Health Organization says that the recent large number of human cases of avian influenza in Vietnam shows that the deadly avian influenza virus has changed, making human beings more and more vulnerable to infection and increasing the risk of human to human transmission Scientists published an assessment report on the WHO website last week The pattern of human cases of avian influenza in Vietnam from January to April shows that the virus "continues to evolve and poses an increasing potential epidemic threat," the scientists said in the report The report said that although scientists did not find any conclusive evidence of human to human transmission of avian flows after studying the cases in Vietnam, the mode of transmission (including eight strains of the virus infecting people living in crowded environments) showed that "the recently emerging H5N1 virus may be more susceptible to human infection" than previous viruses Scientists also found in Vietnam that three people carrying the bird flu virus did not get sick or show signs of disease, which again shows that the virus is adapting to human hosts "It's very worrying that it's learning to live in humans," said Peter cordingry, a spokesman for the World Health Organization in Asia "If the virus only infects and kills people, then it won't spread widely The reason why the common cold is so popular is that you may have become a source of infection before you have a headache " Since December 2003, the avian influenza virus that first appeared in poultry has infected 92 people in Vietnam, Thailand and Cambodia, 53 of whom have died At the time of the first outbreak, most of the patients were believed to have been infected by direct contact with infected poultry But the World Health Organization and international virologists have warned that without control, the virus could mutate into a form that can spread among humans, triggering a human epidemic that could kill millions Although still very dangerous, the virus does seem to have become a little more moderate Of the 49 cases recently confirmed in Vietnam, 17 have died The mortality rate has decreased, and at the time of the outbreak, the mortality rate of confirmed cases was about 70%.