Which one of the following is an example of innate or natural immunity?
A. Natural recovery by crisis in pneumococcal pneumonia
B. Neonatal immunity to haemophilus meningitis
C. Prophylactic immunization with diphtheria toxoid
D. Protection afforded by tetanus antitoxin
E. Resistance in early stages of a primary infection.
The correct answer is E. Resistance in early stages of a primary infection.
Innate immunity refers to the body’s natural, non-specific defense mechanisms that provide immediate protection against infections. This includes physical barriers like skin and mucous membranes, as well as cellular responses like phagocytosis and inflammation.