Short Answer TypeWhat are the various routes by which transmission of human immuno-deficiency virus takes place?
Human immunodeficiency virus or HIV has the following modes of transmission:
(a) Sharing infected needles and syringes.
(b) From an infected mother to a child through the placenta.
(c) Unprotected sexual contact with an infected person.
(d) Transfusion of blood from an infected to a healthy person.
Long Answer TypeWhat is the mechanism by which the AIDS virus causes deficiency of immune system of the infected person?
Short Answer TypeLong Answer TypeWhy is that once a person starts taking alcohol or drugs, it is difficult to get rid of this habit? Discuss it with your teacher.
In your view what motivates youngsters to take to alcohol or drugs and how can this be avoided?
Short Answer TypeHow does the transmission of each of the following diseases take place?
(a) Amoebiasis
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