In Russian airports tightened the pass at the outbreak in several States, corona-virus. Sanitary service sent the appropriate information and instructions to the Federal Agency for tourism and territorial authorities. In domestic airports strengthened sanitary control due to an outbreak in some States, dangerous corona-virus. About this informs "Interfax" referring to the CPS. "In the air checkpoints across the state border of Russia strengthened sanitary-quarantine control of coming from States affected with crown-viral infection", - is told in the statement. Sanitary service sent the appropriate information and instructions to the Federal Agency for tourism and territorial authorities. As of 5 June, the number of infected in South Korea increased to 41. Besides all this, the country recorded 4 deaths. "According to reliable information the epidemiological investigation of the importation of the infection in South Korea committed States in the Middle East and the spread of corona virus in the following cases happened in the medical institutions", - said in the news Department. South Korean authorities have ordered the suspension of classes in more than 800 schools. Professionals study the virus "to study possible changes of its properties". We will add that 1007 cases recorded in Saudi Arabia. We are talking about an acute disease caused by a virus of the genus Coronavirus, mainly affecting the upper respiratory tract. Reservoir and source of infection - ill person. The natural susceptibility of people on the planet are high sensitive to the pathogen in all age groups.