Question:
Rabies is caused by
Rabies is caused by
Updated On: Jun 18, 2022
- virus
- bacteria
- Protozoa
- All of these
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The Correct Option is A
Solution and Explanation
Rabies (hydrophobia) is a $100\%$ fatal disease. It is caused by a rabies virus. The virus enters the human body with saliva of an infected (rabid) animal, generally by the bite of a dog but also of cat. Fear of water is the main symptom, hence, hydrophobia. Incubation period is commonly $1-3$ months, but may vary from $10$ days to one year. Treatment of rabies was discovered by Louis Pasteur. It involves a series of $14$ injections given after the bite of a dog. Bacteria cause diseases like typhoid, diphtheria, tetanus, cholera, TB, etc. Protozoans cause diseases, like kala azar, malaria, sleeping sickness, amoebiasis etc.
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Concepts Used:
Viruses and Subviral Particles
- Viruses are not the only submicroscopic bodies capable of causing disorders within cells.
- Sub-viral particles are infectious agents that bear a resemblance to viruses in structure and composition. But they are notably smaller and simpler than viruses but lack either nucleic acid or protein and are thus not viruses. (Thus they may be proteins beyond nucleic acids or only nucleic acids beyond protein coat /capsid.)
- There are 3 sub-viral agents.
- Prions
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- Virusoids