Characteristics of which virus consist of a double-stranded genome and virions that appear as oval, brick-shaped structures of 200 to 400 nm in length? In addition, the World Health Organi-zation (WHO) eradicated this virus in 1980

a. Cowpox
b. Chicken pox
c. Swinepox
d. Smallpox


D
Smallpox is known to infect only humans and exists as two distinct subtypes, variola major, which causes the most severe disease (case fatality rates of 30%) and occurs mainly in Asia; and variola minor, which is associated with less severe disease (case fatality rates of 0.1% to 2%). Through an intensive vaccine campaign, the WHO declared natural-occurring variola virus era-dicated in 1980.

Biology & Microbiology

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Cladistic analysis of populations of blue wildebeest in Africa has helped to show that habitat fragmentation has led to a loss of ____.

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