Identify the correct statement regarding typhoid fever in human beings:
1. It is caused by a pathogenic protozoan Salmonella typhi
2. The pathogen remains confined to the small intestine
3. Widal test can confirm the infection very early in the disease
4. Intestinal perforation and death may occur in severe cases
Match the following columns and select the correct option:
Column I | Column II | ||
(i) | Typhoid | (a) | Haemophilus influenzae |
(ii) | Malaria | (b) | Wuchereria bancrofti |
(iii) | Pneumonia | (c) | Plasmodium vivax |
(iv) | Filariasis | (d) | Salmonella typhi |
Options: | (i) | (ii) | (iii) | (iv) |
1. | (d) | (c) | (a) | (b) |
2. | (c) | (d) | (b) | (a) |
3. | (a) | (c) | (b) | (d) |
4. | (a) | (b) | (d) | (c) |
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