Figure 2. Table 2. Emergence as a biological process a Non-human reservoirs More than two-thirds of human virus species are zoonotic, i. Figure 3. Figure 4. Conclusions The lines of evidence described earlier combine to suggest the following tentative model of the emergence process for novel human viruses. References 1. Levine A. History of virology. In Fields virology eds Fields B.
Woolhouse M. Ecological origins of novel human pathogens. Population biology of emerging and re-emerging pathogens: preface. B , — Parrish C. Molecular epidemiology of parvoviruses. Temporal trends in the discovery of human viruses. International Committee on Taxonomy of Viruses.
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Emerging pathogens: the epidemiology and evolution of species jumps. Trends Ecol. In this chapter, we provide an overview of polyomaviruses and briefly introduce its association with human diseases, which will be covered extensively in other chapters by experts in the field. Abstract Polyomaviruses are small, nonenveloped DNA viruses, which are widespread in nature.
Publication types Review. Additional Information A virus is an infectious particle that reproduces by taking control of a host cell and using it to make more viruses. They can't reproduce by themselves without a host. Viruses are not considered living. Influenza is a viral infection that attacks the respiratory system i. It is commonly called flu. Flu is primarily treated with rest and fluid intake to allow the body to fight the infection on its own.
An annual vaccine can also help prevent the flu. Hepatitis is a serious liver infection caused by the hepatitis virus. Know more about Biology and ace the concept of Human body and Human Diseases. Get Started for Free Download App. More Human body Questions Q1. Hapatitis-B is also called. Which of the following is a female sex hormone?
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