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Question
Differentiate the following and give examples.
Active and passive immunity
Distinguish Between
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Solution
| Active immunity | Passive immunity | |
| 1. | It is developed when a person’s own cells produce antibodies in response to infection or vaccine. | It is developed when antibodies produced in other organisms are injected into a person to counteract antigens. |
| 2. | Immunity is not immediate. A time lapse occurs for its development. | Immunity develops immediately. |
| 3. | It lasts for a sufficiently long period, maybe a lifetime. | It is not long-lasting. |
| 4. | It has no side effects. | At times, the body reacts to the introduction of antisera. It is called serum sickness. |
| 5. | Examples: Bacterial vaccines, viral vaccines, bacterial products such as toxoids for diphtheria and tetanus. | Examples: Human colostrum containing IgG antibodies, anti-tetanus serum (ATS), antidiphtheric serum (ADS), anti-gas gangrene serum (AGS). |
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