How many of the following factors are responsible for the spread of $AIDS$?
$I -$ Sexual contact with an infected person
$II -$ Wearing clothes of an infected person
$III -$ Transmission from infected mother to the foetus through the placenta
$IV -$ Shaking hands with an infected person
$V -$ Use of contaminated blood and blood products
$VI -$ Use of contaminated needles or syringes by drug addicts

  • A
    $2$
  • B
    $3$
  • C
    $4$
  • D
    $5$

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Which cells does the $HIV$ virus primarily target in the blood to cause infection?

$HIV$ virus affects which of the following cells in the human body?
$(i)$ $T_H$ cells
$(ii)$ $T_1$ cells
$(iii)$ Mast cells
$(iv)$ Macrophages

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