Question
Two arboviral infections
Q8 2 marks Short Notes ★ ✓
Answer
Two arboviral infections (arthropod-borne viral diseases):
Dengue fever/Dengue haemorrhagic fever — caused by Dengue virus (Flaviviridae), transmitted by Aedes aegypti /albopictus mosquitoes; causes biphasic fever, severe myalgia/arthralgia, and, in severe forms, plasma leakage and haemorrhagic manifestations.Japanese Encephalitis — caused by Japanese Encephalitis virus (Flaviviridae), transmitted by Culex mosquitoes; a leading cause of viral encephalitis in Asia, with pigs as the amplifying host.
(Other valid examples: Chikungunya, Kyasanur Forest Disease, Crimean-Congo Haemorrhagic Fever, Zika.)
1 Dengue Fever and Viral Haemorrhagic Fever
Other Years Asked
1 19 years old female patient complaints of fever biphasic in nature with severe bone
pains in the back and limbs. She had maculo-papular rash and developed
haemorrhagic manifestations. Answer the following: 2015 February (2010 Scheme) Essay · 10 marks 2 20 years boy admitted in hospital with history of high grade fever and severe back
pain and joint pain and bleeding gums. Answer the following.
What is the probable diagnosis and the infecting agent.
Classify arbo viruses and the ones seen in India.
Name the complications of above disease
Briefly describe the lab. diagnosis and prophylactic measures employed.
(1+3+2+2+2) 2018 July (Supplementary) (2010 Scheme) Essay · 10 marks 3 A 14 years old boy presents with complaints of fever, headache, retro bulbar pain
maculopapular rash, pain in the back and limbs for the past ten days. The fever is
typically biphasic in nature. Answer the following.
What is the probable diagnosis and the causative agent
How the disease is transmitted. Name two other diseases transmitted in the
same way.
Name the investigations for specific diagnosis and test for complications
Name two complications of this disease
What are the preventing measures to be employed (1+2+2+3+2) 2018 February (2010 Scheme) Essay · 10 marks 4 A 25-year-old migrant labourer was brought to outpatient department with high grade
fever, severe myalgia and retro orbital pain. On examination, he had maculopapular
rashes over his body. Blood examination showed thrombocytopenia and NS1 antigen
positive 2023 July (Supplementary) (2019 Scheme) Essay · 8 marks 5 A 24 year old male presented with fever, headache, severe myalgia, retrobulbar pain
for past five days. On examination, he had maculopapular rash all over his body.
Blood examination revealed thrombocytopenia 2024 March (Supplementary) (2010 Scheme) Essay · 7 marks 6 Dengue hemorrhage fever 2014 March (2010 Scheme) Short Essay · 5 marks 7 Describe the pathogenesis and laboratory diagnosis of Dengue fever 2025 August (Supplementary) (2010 Scheme) Short Essay · 5 marks 8 Complications of Dengue fever 2025 March (Supplementary) (2010 Scheme) Short Note · 2 marks 9 Viral haemorrhagic fever. 2016 February (2010 Scheme) Short Note · 2 marks 10 Name two viral hemorrhagic fever 2024 August (Supplementary) (2010 Scheme) Short Note · 2 marks 11 Lab diagnosis of dengue fever 2023 March (Supplementary) (2010 Scheme) Short Note · 2 marks 
