Examlex
Use the following information to answer the few questions.
The herpes viruses are very important enveloped DNA viruses that cause disease in all vertebrate species and in some invertebrates such as oysters.Some of the human ones are herpes simplex (HSV) I and II,causing facial and genital lesions,and the varicella-zoster (VSV) ,causing chicken pox and shingles.Each of these three actively infect nervous tissue.Primary infections are fairly mild,but the virus is not then cleared from the host; rather,viral genomes are maintained in cells in a latent phase.The virus can then reactivate,replicate again,and be infectious to others.
-In 2009,a flu pandemic was believed to have originated when viral transmission occurred from pig to human,thereby earning the designation,"swine flu." Although pigs are thought to have been the breeding ground for the 2009 virus,sequences from bird,pig,and human viruses were all found within this newly identified virus when isolated from humans.What is the most likely explanation of why this virus contained sequences from bird,pig,and human viruses?
Old Old
A demographic term referring to elderly individuals, typically aged 85 years or older, often facing unique health and social challenges.
Physiological Decline
describes the gradual reduction in the functional capacity of an organism's physiological functions, often associated with aging or disease processes.
Life-threatening Diseases
Conditions with a high likelihood of causing death if not treated urgently and appropriately.
Age Stratification
A sociological concept that refers to the hierarchical ranking and categorization of people based on their ages.
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