World $AIDS$ Day and World Earth Day are celebrated on . . . . . . and . . . . . . respectively.

  • A
    $22 \text{ April}, 1 \text{ December}$
  • B
    $2 \text{ December}, 24 \text{ April}$
  • C
    $1 \text{ December}, 22 \text{ April}$
  • D
    $1 \text{ December}, 24 \text{ May}$

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Immune deficiency syndrome in humans could develop as a consequence of

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

$30$ pregnant women infected with $A.I.D.S.$ are admitted to a hospital ward. How many of their children are likely to be infected with $H.I.V.$?

What is the full form of $NACO$?

In which condition does the $CD_4$ count in the blood fall below $200 \times 10^{6}$ cells/$L$?

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