| Column-$I$ | Column-$II$ |
| $(A)$ Amoebiasis | $(i)$ Treponema pallidum |
| $(B)$ Diphtheria | $(ii)$ Use only sterilized food and water |
| $(C)$ Cholera | $(iii)$ $DPT$ Vaccine |
| $(D)$ Syphilis | $(iv)$ Use oral rehydration therapy |
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| Column $I$ | Column $II$ |
| $1.$ Pneumococci | $a.$ Attack lymphatic vessels and lymph nodes |
| $2.$ Plasmodium | $b.$ Attack alveoli |
| $3.$ Filarial worm | $c.$ Attack macrophages and helper $T$ cells |
| $4.$ Retrovirus | $d.$ Attack liver cells and red blood cells |
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