Widespread resistance of malarial parasite to drugs like chloroquine has prompted attempts to develop a malarial vaccine to combat malaria. Why is it difficult to develop an effective malaria vaccine ?

Consider the following statements— I. Vector-borne diseases account for more than 17% of all infectious diseases. II. Malaria is a parasitic infection transmitted by Anopheline mosquitoes. IlI. Dengu…

The vector of malaria parasites is

Consider the following statements : 1. Dengue is a protozoan disease transmitted by mosquitoes. 2. Retro-orbital pain is not a symptom of dengue. 3. Skin rash and bleeding from nose and gums are some…

Consider the following statements : 1. Taeniasis is an intestinal infection caused by three species of tapeworm— Taenia solium, Taenia saginata and Taenia asiatica. 2. When cysts develop in the brain…

Which class of immunoglobulin is the first to be produced in response to an infection?