Scientists issue warning over new bird flue strainJuly 11, 2013 - 20:10 AMT PanARMENIAN.Net - A new strain of bird flu that has already claimed 37 lives in China has traits that make it a potential global threat, say scientists, Belfast Telegraph reported. Researchers tested the ability of the H7N9 virus to infect several mammal species including ferrets and monkeys. They found that as well as readily invading the lungs, it could be spread like seasonal flu by coughing and sneezing. Professor Yoshihiro Kawaoka, from the University of Wisconsin-Madison, US, and Tokyo University in Japan, who led the international team, said: "H7N9 viruses have several features typically associated with human influenza viruses and therefore possess pandemic potential and need to be monitored closely." Most bird flu viruses do not infect humans. But H7N9 has so far infected at least 132 people, more than a fifth of whom have died. Several instances of human-to-human infection are suspected. In monkeys the H7N9 virus efficiently infected cells in both the upper and lower respiratory tract, the scientists reported in the journal Nature. Most human flu viruses are restricted to the upper airway of non-human primates. Transmission studies were conducted in ferrets, which like humans possess the ability to cough and sneeze. One of the H7N9 sub-strains isolated from humans was found to transmit via respiratory droplets, though not as efficiently as human flu viruses. A major problem associated with the virus is that it infects poultry birds without killing them, making surveillance difficult. A more positive outcome from the research was the discovery that most H7N9 strains are sensitive to the antiviral drugs effective against seasonal flu. One strain, which appeared to be a mix of two H7N9 variants, showed signs of resistance against the drug Tamiflu. Top stories The number of state universities will be reduced from 23 to 8 by 2030, Minister of Education, Science, Culture and Sport Zhanna Andreasyan has said. From September 21 to November 11, a total of 2,820 Russians registered at a place of residence in Armenia, the police has said. The situation on the contact line between Karabakh and Azerbaijan was relatively stable overnight, the Defense Army says. Defense Minister Suren Papikyan has visited the southern Armenian province of Syunik, the Defense Ministry reported on March 18. Partner news | Czech-Armenian military cooperation discussed in Yerevan A delegation led by the Director General for the Industrial Cooperation Division of the Ministry of Defence of the Czech Republic visited Armenia. U.S. welcomes efforts to define Armenia-Azerbaijan border The United States welcomes efforts to define the border between Armenia and Azerbaijan, says Vedant Patel. Biden honors resilience of Armenian people on April 24 U.S. President Joe Biden has issued a statement on the 109th anniversary of the Armenian Genocide. Macron says France commemorates 109th anniv. of Armenian genocide Today France commemorates the 109th anniversary of the Armenian genocide of 1915, Macron says. |