The Ro of Ebola has been estimated to be somewhere between 1.5 and 2. See graphic below. The number of people that one sick person will infect (on average) is called R.. Here are the maximum R. values for a few viruses. more contagious Hepatitis C (2) Ebola (2) HIV (4) SARS (4) Mumps (10) Measles (18) What percentage of the population would have to be vaccinated to stop the spread of Ebola if it were to be introduced to a new continent? a. 33-50% b. >99% c. 75-99% d. 66-75% e. <33%

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Viral Infections

Viruses are abundantly found, minute entities that have genetic material enclosed within a protein coat. The proteinaceous material enclosing the genetic material of the virus is called a capsid. The genetic material could be either DNA (deoxyribonucleic acid) or RNA (ribonucleic acid). A virus is too minute to be looked at with naked eyes and therefore visualized with the help of a microscope. They are acellular entities that require a host for processes, such as replication, transcription, translation and multiplication. Plants, animals, and bacteria act as host wherein the virus reproduce. Viruses cannot multiply outside the host's body and thus are considered nonliving outside the host body.