--%>

A long enduring vaccine is not against common cold subsist

Why doesn't a long enduring vaccine against common cold subsist yet?

E

Expert

Verified

Viruses which present a high mutation rate such as the virus which causes the common cold escape simply from the action of vaccines against them. Subsequent to a primary immune response (that is, natural or artificially induced) against virus in the subsequent season of infection new mutant resistant strains emerge and the protection received with the immune response of last season is lost. (That is, one could state that the high mutation rate is a form of ‘immunization’ found by such viruses.)

   Related Questions in Biology

  • Q : What is Cyclosis Cyclosis : Cyclosis is

    Cyclosis: Cyclosis is a kind of internal cell movement in which an oriented flow of circulating material is formed and maintained in cytoplasm by the action of microfilaments. Cyclosis is much easily detected in plant cells.

  • Q : Effect of price supports or acreage

    Assume the government wants to raise farmers' incomes. Why do price supports or acreage restriction programs cost society more than simply giving farmer's money?Price supports & acreage limitations cost society more than the dollar cost of

  • Q : Explanation of indirect immuno

    Give a brief explanation of indirect immuno fluorescence.

  • Q : Mechanism of the inflammation work How

    How does the mechanism of the inflammation work?

  • Q : Fayol's Principles of Management

    Fayol's Principles of Management Division of Labor: Division of labor leads to specialization which increases the efficiency

  • Q : Characterization of symmetry and

    Describe the characterization of symmetry and nervous system in echinoderms?

  • Q : Saturation or unsaturation of fats and

    What is the meaning of saturation or unsaturation of fats and oils?

  • Q : Menstruating problem A 14-year old

    A 14-year old woman attends with her mother as she has not started menstruating. Outline your primary assessment?

  • Q : Liberation of female gamete from

    Specify the hormones which promote the liberation of female gamete from follicle and at which day of the menstrual cycle does this mechanism take place? What is this event termed as?

  • Q : What is Voice Communications Voice

    Voice Communications: It is the communication via the Internet is the most advanced and newest technology nowadays. This technology was introduced in the mid of 90s that has raised the value and significance of Internet communication.