Topic content:
The infectious source, transmission route and susceptible population of "flu" are ()
A. Most of the patients with droplets, air and flu
B. Influenza patients, droplets, air, most people
C. Most people, droplets, air, flu patients
D. Spray, air, most people, flu patients
Best answer:
Infectious diseases refer to diseases caused by pathogens that can spread among organisms. Pathogens include bacteria, viruses, fungi, parasites, etc. The epidemic of infectious diseases has three links: the source of infection, the route of transmission, and susceptible people. The source of infection refers to people or animals that can spread pathogens, such as influenza patients; The transmission route refers to the route through which the pathogen leaves the transmission source to reach the healthy person, such as the patient's excreta, secretions and biological or non biological vectors for disease transmission; Susceptible people refer to people who lack immunity to certain infectious diseases and are vulnerable to the disease, such as the elderly and children. Therefore, the source of infection, route of transmission, and susceptible people of "flu" are influenza patients, droplets, air, and most people in turn, so option B is the right choice
Therefore: B
Answer analysis:
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Test core:
Infectious disease: a disease caused by a pathogen that can spread between people or between people and animals is called infectious disease. Pathogens include viruses, bacteria, fungi, parasites, etc. Infectious diseases are infectious and epidemic.