All hemorrhagic fever viruses have single-stranded RNA genomes, which differ in polarity and in the number of segments (flaviviruses: positive-sense, 1 segment; filoviruses: negative-sense, 1 segment; arenaviruses: negative-sense, 2 segments; bunyaviruses: negative-sense, 3 segments).or example, many cases of Crimean-Congo hemorrhagic fever, Lassa or yellow fever are mild and go unrecognized, but Ebola and Marburg hemorrhagic fever is almost always a severe disease, in which the case fatality rate ranges from 50-90%.
You'll pay the standard premium amount if: 1  You enroll in Part B for the first time in 2017. 2  You don't get Social Security benefits. 3  You're directly billed for your Part B premiums.  You have Medicare and Medicaid, and Medicaid pays your premiums. (Your state will pay the standard premium amount of $134.)
Unlike Part A, Medicare Part B isnât free. Thereâs a monthly premium for medical coverage. Most people who enroll in Part B â which, like all portions of Medicare, is completely optional â pay a standard premium rate thatâs set by the government. In 2017, the standard premium for new enrollees is $134 a month.