Answer to Question 1
Answer: 2, 3, 4
1. Virulence is the power of a microorganism to cause infection. It is not affected by the age of the host.
2. Virulence is the power of a microorganism to cause infection. It is affected by the production of toxins.
3. Virulence is the power of a microorganism to cause infection. It is affected by the number of organisms.
4. Virulence is the power of a microorganism to cause infection. It is affected by the host's health.
5. Virulence is the power of a microorganism to cause infection. It is not affected by the number of days the infection is present.
Answer to Question 2
Answer: 2, 3, 4
1. Hepatitis A is caused by a foodborne pathogen.
2. Hepatitis B is caused by a bloodborne pathogen.
3. Hepatitis C is caused by a bloodborne pathogen.
4. Hepatitis D is caused by a bloodborne pathogen.
5. Hepatitis E is not an identified type of hepatitis.