HIV,
Influenza and Marburg diseases are classified under emerging infectious diseases.
Emerging Infectious Diseases are diseases that have recently increased in
incidence or in geographic or host range such as tuberculosis, cholera, dengue
fever, malaria, japanese encephalitis, yellow fever and west nile fever, OR are
diseases caused by new variants due to evolution but are assigned to known
pathogens such as the Human Immunodeficiency virus, new strains of Influenza
virus, Severe Acute Respiratory Syndrome and Ebola. Molecular mechanisms and
cellular processes involved in disease pathogenesis, including transmission
dynamics and epidemiology, of pathogens that cause reemerging infectious
diseases like Marburg, Ebola, and Cholera have yet to be understood.
Emerging
diseases caused by novel or unrecognized pathogens such as Hantavirus, or those
whose transmission modes are under study, such as Ebola and Nipah present yet
another challenge. The
mechanisms of disease emergence involve a multiplicity of factors in addition
to those at molecular and cellular levels. In addition to virus genetic
variation (mutation, reassortment, and recombination), they also include
environmental, ocean and air circulation patterns, extreme weather events as
well as the ecological and demographic factors that increase the vulnerability
of the people to previously unfamiliar microbes. Read more.....................
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