As long as there is a source of infection, infectious diseases will become popular, right?

Wrong; Infectious diseases must have three basic links: the source of infection, the transmission route and the susceptible population, and without any of these links, infectious diseases cannot be prevalent.

What you want to ask is what is the main source of infection as an infectious disease? Parasites, bacteria, viruses

In general, the main sources of infection of infectious diseases are parasites, bacteria, viruses, etc. It is recommended that patients pay attention to healthy and hygienic diet in daily life, avoid eating raw food as much as possible, and carry out appropriate exercise to enhance physical fitness. Eat more fresh vegetables and fruits, ensure regular life and rest time, and avoid staying up late and overwork.

When you have uncomfortable symptoms, you should go to the hospital for relevant examinations in time.

The source of infectious disease mainly refers to people or animals that have been infected with a certain pathogen. The source of infection is not limited to humans, it also includes animals infected with the same pathogen. If it is infected through animals, it is generally a natural infectious disease.

Right. Test question analysis: Infectious disease is caused by pathogens, a disease that can be transmitted between organisms, with the characteristics of infectivity and epidemic, there are many kinds of infectious diseases that have been contagious before the onset of the disease, in the early stage of infection, because the pathogen of infectious diseases is extremely pathogenic, so the contagion is the strongest, so the description of the question stem is correct.

Analysis of the test questions: The three basic links of the epidemic of infectious diseases are: the source of infection, the route of transmission and the susceptible population The source of infection: the person or animal that can spread the pathogen

Transmission route: The route through which the pathogen leaves the source of infection and reaches a healthy person is called the transmission route, such as airborne transmission, dietary transmission, biological vector transmission, etc

Susceptible population: People who lack immunity to a certain infectious disease and are susceptible to the disease are called susceptible populations

dMosquitoes with malaria parasites.

Analysis: Plasmodium parasite is the pathogen that causes malaria in humans, and malaria mosquitoes can spread malaria parasites to make people sick, and from this point of view, malaria mosquitoes are the source of infection; In addition, when the malaria mosquito bites a person, it transmits the malaria parasite to humans, and from this point of view, the malaria mosquito is the transmission route of malaria.

dMosquitoes with malaria parasites.

1. It is necessary to have three conditions: the source of infection, the transmission route, and the susceptible population.

2. Measures: control the source of infection, cut off the transmission route, and protect the susceptible population.

3. There are many transmission routes such as respiratory tract infection, digestive tract, contact, body fluids, mother and child, etc., and different measures should be taken according to different transmission routes, and specific problems should be analyzed on a case-by-case basis.

4. Influenza is more prevalent now, mainly through the respiratory tract and contact, so wash your hands frequently; Strengthens resistance.

The epidemic of infectious diseases must have three links at the same time: the source of infection (people or animals who can spread the pathogen), the route of transmission (the route through which the pathogen leaves the source of infection and reaches healthy people), and the susceptible population (the population that lacks immunity to a certain infectious disease and is susceptible to the disease).

So the answer is:

The epidemic of infectious diseases must have three links at the same time: the source of infection (people or animals who can spread the pathogen of the foci), the route of transmission (the route that the pathogen passes through to reach healthy people after leaving the source of infection), and the susceptible population (the population who lacks immunity to a certain hidden cave infectious disease and is susceptible to the disease), without any link, the infectious disease will not be epidemic Therefore, during the epidemic of infectious diseases, as long as you avoid contact with the source of infection, you will definitely not be infected with infectious diseases It is wrong

So the answer is: