--%>
Assignment Help - homework help

Vaccines against the viral infection-dengue and AIDS

Why is it difficult to create effectual vaccines against the viral infection such as dengue and AIDS?

E

Expert

Verified

It is difficult to create vaccines against the dengue since there are four dissimilar types of viruses which cause the disease (DEN1, DEN3, DEN2 and DEN4) and it is supposed that the protection against one of them make worse the clinical manifestation when the person is later infected by another dengue virus.

In the case of HIV, the production of a vaccine is hard since the virus is extremely mutants and evades antibody action.

   Related Questions in Biology

  • Q : Reaction Paper Choose two of the

    Choose two of the following 3 topics a 1-3 page reaction paper. Identify all sources used-you must use sources - it must be typed and double spaced 1)      Resolved: The proposed AT&T - T-Mobile merger is beneficial to consumers, thus the Govt. Should approve

    		•
  • Q : Describe what do protozoans eat

    Describe what do protozoans eat? Do they move in the search for food?

    		•
  • Q : Hemoglobin and oxyhemoglobin How

    How dissimilar are hemoglobin and oxyhemoglobin? Where is it expected to get a higher concentration of oxyhemoglobin, in peripheral tissues or in lungs?

    		•
  • Q : Mucsle performing the peristaltic

    State the type of muscle tissue which performs the peristaltic movements of intestines?

    		•
  • Q : Organ releases the female gamete within

    Illustrate the name the organ which releases the female gamete within formation? How is that release activated? Also write the organ which collects the released gametes?

    		•
  • Q : Placenta and its main function State in

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

    		•
  • Q : How are neural networks distinct than

    How are neural networks distinct than Bayesian belief networks all along the following dimensions: (A) Inspect capability of knowledge, (B) Requirement for probabilities obtained from "domain" experts, (C) Requirement for data to train the system, and (D

    		•
  • Q : Antigen-presenting cells of immune

    Specify some of the antigen-presenting cells of immune system?

    		•
  • Q : Techniques of Scientific Management

    Techniques of Scientific Management   Time Study : Time study is the technique used to measure the time that may be take

    		•
  • Q : Describe the pre-dominating chemical

    Describe the pre-dominating chemical compounds correspondingly in eggshell, white and yolk?

    		•