add a comment |. up vote 1 down vote. If a game has a value, it need not to have a mixed strategy Nash equilibrium. In the Von Neumann's Minimax theorem stated above, it is assumed that, for each player, the set of mixed strategy best responses is nonempty given the other player's mixed strategy.
Not all RNA viruses are retroviruses, e.g., the measles virus and flu virus are RNA viruses, but not retroviruses. There are three families of retroviruses: oncoviruses (causing cancer), lentiviruses (slow viruses, of which HIV is one), and foamy viruses or spumaviruses (about which much less is known).
The different types of VIRAL hepatitis are A (formerly called infectious hepatitis), B (serum hepatitis), C (formerly called non-A, non-B hepatitis), D (delta hepatitis), E (a virus transmitted through the faeces of an infected person), F, G, cryptogenic (Caused by a virus as yet unidentified).epatitis B is caused by the hepatitis B virus, the virus is very common in Asia, China, Philippines, China, Africa and the Middle east.