Rabies is transmitted to humans mainly through
Correct answer: D. the bite of an infected animal such as a dog
- A. mosquito bites
- B. contaminated milk
- C. airborne droplets
- D. the bite of an infected animal such as a dog
Explanation
The rabies virus travels in the saliva of infected mammals and enters through a bite, then moves along nerves to the brain, causing hydrophobia. Prompt vaccination after a bite prevents the disease once symptoms appear, when it is almost always fatal.
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About Viruses
Viruses are acellular infectious particles made of genetic material enclosed by a protein capsid, sometimes with a lipid envelope. Their replication depends on a host cell and may follow lytic or lysogenic cycles, so viral structure and reproduction differ fundamentally from those of cellular organisms such as bacteria.
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