The spread of which of the following diseases are not caused by mosquitos.

The correct answer is typhoid.

Key Points

• Typhoid is not transmitted by mosquitoes
• It is caused by the bacterium Salmonella Typhi
• Spread through contaminated food and water
• Common in areas with poor sanitation
• Symptoms include high fever, weakness, and abdominal pain

​ Additional Information

• Malaria:
  • Caused by Plasmodium parasites
  • Transmitted by female Anopheles mosquitoes
  • Symptoms include fever, chills, and flu-like illness
  • Endemic in tropical and subtropical regions
  • Prevention includes mosquito nets and antimalarial drugs
• Dengue:
  • Viral disease caused by dengue virus
  • Spread by Aedes aegypti mosquitoes
  • Symptoms include high fever, severe headache, and joint pain
  • Can develop into life-threatening dengue hemorrhagic fever
  • No specific treatment, only symptom management
• Chikungunya:
  • Viral disease caused by CHIKV virus
  • Also transmitted by Aedes mosquitoes
  • Symptoms include fever and severe joint pain
  • Rarely fatal but can cause chronic joint problems
  • Outbreaks occur in Africa, Asia, and the Americas