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Questions and Answers
What is a characteristic of Flaviviruses?
What is a characteristic of Flaviviruses?
- Enveloped virus
- Double-stranded DNA
- RNA-dependent RNA polymerase
- Single segment of RNA (correct)
Which of the following is a common symptom of Dengue fever?
Which of the following is a common symptom of Dengue fever?
- Hemorrhagic fever (correct)
- Bleeding gums
- Jaundice
- Coma
Which vector is responsible for transmitting Yellow fever?
Which vector is responsible for transmitting Yellow fever?
- Culex mosquito
- Aedes aegypti mosquito (correct)
- Ticks
- Anopheles mosquito
What is a common complication of Hepatitis C?
What is a common complication of Hepatitis C?
What is a characteristic of West Nile virus?
What is a characteristic of West Nile virus?
What is the treatment for Dengue fever?
What is the treatment for Dengue fever?
What type of vaccine is available for Yellow fever?
What type of vaccine is available for Yellow fever?
What is responsible for transmitting Dengue fever?
What is responsible for transmitting Dengue fever?
What is a characteristic of Hepatitis C?
What is a characteristic of Hepatitis C?
What is a common symptom of Yellow fever?
What is a common symptom of Yellow fever?
What is a possible complication of West Nile virus?
What is a possible complication of West Nile virus?
What is the nature of the RNA in Flaviviruses?
What is the nature of the RNA in Flaviviruses?
What is the reservoir for West Nile virus?
What is the reservoir for West Nile virus?
What type of vaccine is available for Yellow fever?
What type of vaccine is available for Yellow fever?
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Study Notes
Flaviviruses
- Flavivirus is a positive sense RNA virus.
- Examples of flaviviruses include Hepatitis C, Dengue fever, Yellow fever, and West Nile virus.
Dengue Fever
- Caused by Dengue virus, a flavivirus transmitted by the Aedes egypti mosquito.
- Symptoms include hemorrhagic fever, bleeding, and bone marrow infection.
- Complications include renal failure, septic shock, and even death.
- Treatment is supportive, focusing on hydration.
Yellow Fever
- Caused by Yellow fever virus, a flavivirus transmitted by the Aedes egypti mosquito.
- Symptoms include jaundice, back ache, bloody stool and diarrhea, and vomiting.
- Vaccine available: live attenuated.
West Nile Virus
- Reservoir: birds
- Vector: mosquitoes
- Symptoms include encephalitis, meningitis, flaccid paralysis, and coma.
- Can cause death.
Hepatitis C
- A flavivirus that affects the liver.
- Can cause liver disease and failure.
- No specific treatment, but supportive care is essential.
Flaviviruses
- Flavivirus is a positive sense RNA virus.
- Examples of flaviviruses include Hepatitis C, Dengue fever, Yellow fever, and West Nile virus.
Dengue Fever
- Caused by Dengue virus, a flavivirus transmitted by the Aedes egypti mosquito.
- Symptoms include hemorrhagic fever, bleeding, and bone marrow infection.
- Complications include renal failure, septic shock, and even death.
- Treatment is supportive, focusing on hydration.
Yellow Fever
- Caused by Yellow fever virus, a flavivirus transmitted by the Aedes egypti mosquito.
- Symptoms include jaundice, back ache, bloody stool and diarrhea, and vomiting.
- Vaccine available: live attenuated.
West Nile Virus
- Reservoir: birds
- Vector: mosquitoes
- Symptoms include encephalitis, meningitis, flaccid paralysis, and coma.
- Can cause death.
Hepatitis C
- A flavivirus that affects the liver.
- Can cause liver disease and failure.
- No specific treatment, but supportive care is essential.
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