Q. Consider the following differences between Dengue and Malaria:

1. While malaria can be spread only through the bite of female Anopheles mosquito, dengue can be spread not only through the bite of Aedes Aegypti but also if another uninfected mosquito bites the infected person and then spread it to other people.
2. The only known mode of transmission of dengue is the bite of Aedes Aegypti, whereas mosquito vector, infected needles and transfusion are the modes of transmission for malaria.
3. In case of malaria, bone marrow got affected while in case of dengue, spleen got affected.

Which of the above is/are correct?
Answer: Only 1 & 2
Notes: Dengue and malaria are mosquito-borne diseases caused by different pathogens: malaria by the Plasmodium parasite and dengue by the Dengue virus. Common symptoms include fever and joint pain. Malaria leads to rapid red blood cell (RBC) destruction and spleen enlargement, while dengue results in decreased white blood cells (WBCs) and platelets, potentially causing excessive internal bleeding due to ruptured capillaries.