Robótik

The 2009 flu pandemic was an influenza pandemic, and the second of the two pandemics involving H1N1 influenza virus (the first of them was the 1918 flu pandemic), albeit in a new version. Firstdescribed in April 2009, the virus appeared to be a new strain of H1N1 which resulted when a previous triple reassortment of bird, swine and human flu viruses further combined with a Eurasian pig fluvirus, leading to the term "swine flu" to be used for this pandemic. Unlike most strains of influenza, H1N1 does not disproportionately infect adults older than 60 years; this was an unusual andcharacteristic feature of the H1N1 pandemic. Even in the case of previously very healthy persons, a small percentage will develop pneumonia or acute respiratory distress syndrome. This manifests itself asincreased breathing difficulty and typically occurs 3–6 days after initial onset of flu symptoms. The pneumonia caused by flu can be either direct viral pneumonia or a secondary bacterial pneumonia. Infact, a November 2009 New England Journal of Medicine article recommends that flu patients whose chest X-ray indicates pneumonia receive both antivirals and antibiotics. In particular, it is a warningsign if a child (and presumably an adult) seems to be getting better and then relapses with high fever, as this relapse may be bacterial pneumonia.
Initially coined an "outbreak", the stint began inthe state of Veracruz, Mexico, with evidence that there had been an ongoing epidemic for months before it was officially recognized as such. The Mexican government closed most of Mexico City's publicand private facilities in an attempt to contain the spread of the virus; however, it continued to spread globally, and clinics in some areas were overwhelmed by infected people. In June, the WorldHealth Organization (WHO) and US Centers for Disease Control (CDC) stopped counting cases and declared the outbreak a pandemic.
Despite being informally called "swine flu", the H1N1 flu virus cannot...