Defenses that are acquired from the maternal body through immortality, are present in the body for life and are rapidly effective are called innate defenses. This is called genetic immunity.
Different types of innate defenses are-
- Personal defense: When a person resists germs through his own immune system, it is called personal defense.
- Species defence: Attacks by microbes are limited to specific species and only those specific species resist the pathogen. For example, the malaria parasite is limited to humans and mosquitoes.
- Group immunity: If one group of people is infected by a parasite, the other group can easily resist it. For example, whites are more affected by tuberculosis than whites.