Period between inoculation and appearance of symptoms in blood is called

Options

A. Muturation time
B. Prepatent period
C. Incubation period
D. Febrile period.

Answer

To answer the question regarding the period between inoculation and the appearance of symptoms in the blood, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Inoculation**: Inoculation refers to the introduction of a pathogen into the body. This can occur through various means, such as bites from vectors like mosquitoes.

2. **Pathogen's Journey**: Once the pathogen (such as a virus or protozoan) is inoculated into the bloodstream, it does not immediately cause symptoms. Instead, it needs time to enter specific host tissues.

3. **Multiplication of the Pathogen**: After entering the host tissues, the pathogen begins to multiply. This multiplication is crucial because the symptoms of the disease are usually a result of the pathogen reaching a certain population level within the host.

4. **Defining the Time Period**: The time taken from the moment of inoculation until the symptoms of the disease appear is what we are trying to identify. This time period is critical for understanding the progression of infectious diseases.

5. **Identifying the Correct Term**: The specific term used to describe this time period is the "incubation period." It is the duration during which the pathogen is multiplying and preparing to cause symptoms.

6. **Conclusion**: Therefore, the correct answer to the question is that the period between inoculation and the appearance of symptoms in the blood is called the "incubation period."

### Final Answer:
The period between inoculation and appearance of symptoms in blood is called the **incubation period**.

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