Which term describes subjective characteristics of a disease that can be felt by the patient alone?
A. Signs
B. symptoms
C. syndromes
D. infection
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Which mechanism about how LPS induces fever is not right?
A. LPS stimulate monocytes in blood to release IL6,IL1 and TNFa;
B. IL6,IL1 and TNFa are called endougenous pyrogens to stimulate hypothalamus and induce fever ;
C. IL6,IL1 and TNFa are elevated and circulaedin blood to reach brain;
D. LPS enter blood to reach hypothalamus directly to induce fever.
Which statement about carrier is right?
A person with asymptomatic infection that can be transmitted to other persons.
B. A person with symptomatic infection that can be transmitted to other persons.
C. A person with symptomatic infection that can`t be transmitted to other persons.
D. A person with asymptomatic infection that can`t be transmitted to other persons.
Which statement about inapparent infection is not right?
A. The bacterial virulence is weaker, the immunity of the host is stronger;
B. No symptoms are found clinically by a doctor;
C. No pathogens are transmitted to other person;
D. Antibody may be induced in inapparent infection.
Which statement about apparent infection is not right?
A. Significant signs and symptoms are found clinically;
B. The pathogens would be eliminated completely after recovery from infection;
C. Pathogens could be transmitted to other persons;
D. The bacterial virulence is higher, the host immunity is weaker;
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