Existence of a long lasting vaccine in common cold

What is the reason that a long lasting vaccine doesn't exist against common cold yet?

E

Expert

Verified

Viruses that are of a high mutation rate like the virus which causes the common cold escape effortlessly from the action of vaccines against them. After a inital immune reaction(natural or artificially induced) against the virus in the subsequent season of infection new mutant opposing strains appear and the safety obtained with the immune response of the previous season is lost. (One can say that the high mutation rate is a form of “immunization” found by these viruses.)

   Related Questions in Biology

  • Q : Are bacteria the mere prokaryotic beings

    Are bacteria the mere prokaryotic beings?

  • Q : Prejudice - Barriers to Diversity -

    Unjustified negative attitude towards a person based on his or germ membership of a particular group.

  • Q : Placenta and its main function State in

    State in which type of the animals does placenta is present? Explain its main function?

  • Q : Netlike membranous complex-Biological

    The netlike membranous complex of superposed flat scales with the vesicles shedding from the extremities seen in the electronic microscopy. What is observed structure? And also illustrate out its biological role?

  • Q : Circulatory system and chambers in

    Explain, whether fishes have an open or closed circulatory system? How many chambers are there in heart of the fish and how does blood flow throughout fish body?

  • Q : Maturation of the ovarian Follicles

    Illustrate the name the hormone which affects the maturation of the ovarian Follicles after the menses?

  • Q : Factors - Group Effectiveness -

    There are several factors that influence the effectiveness of a group. Certain characteristics of the group, the types of tasks they perform, the work setting, the technology used and the operating dynamics of the group within the work setting all have an influence on group effectiveness, we can

  • Q : Define the term tympanum Define the

    Define the term tympanum? In which portion of the ear is it situated and also states its function?

  • Q : Explain ABC analysis ABC analysis : It

    ABC analysis: It is an inventory management technique wherein the items are classified and clubbed according to their value. The items including the top 5-10% of the total value of inventory are known as "Class A", next 10-15% is classified as "Class

  • Q : Function of vitellus Specify the

    Specify the function of vitellus within the vertebrate egg? Classify these eggs in accordance with the amount of vitellus within them?

©TutorsGlobe All rights reserved 2022-2023.