Pests can affect human health, what are the four pests?

Introduction: Many people have heard that pests can affect people's health, but there are four pests among pests, do you know what kinds of insects and pests are specifically referred to? Let's find out.

<> fact, pests have an impact on people's health, and some people will list the four pests, in fact, the four pests have a very big impact on a healthy life, many people don't know what the four pests are, and then follow to take a look at the four pests that refer to flies, mosquitoes, mice and cockroaches. In fact, in the past there were four pests which were flies, mosquitoes, rats and sparrows, but now they are cockroaches. These pests have an impact on people's health, among which people are most exposed to creativity and words, we will find that mosquitoes like to bite, so the inside of its mouth is poisonous, of course, when it is a poisonous mosquito, you will find that your body will have a bag, this time is particularly itchy, and some serious will have **inflammation, so be sure to prevent mosquitoes.

Flies are also a particularly troublesome pest, it is everywhere, especially in some unclean places, flies are particularly numerous, and the things that are blown by flies cannot be eaten, because there are many bacteria in his mouth, and many people do not understand, at this time we must pay attention to the process of removing flies. Among them, cockroaches and rats are also harmful, because there are a lot of bacteria in their bodies, and in the dirtiest environment, life is done, so the things they have been exposed to cannot be eaten, and the daily time is to try to contact these pests as little as possible, which is not good for the body. In fact, the best way to stay away from pests is to clean your home and stay away from some dirty places, because there are more pests in dirty or humid places.

So this time tells us the importance of paying attention to hygiene, when the environment is very clean, these pests have nowhere to escape.

These four pests are flies, cockroaches, mosquitoes, rats, these four pests will transmit viruses and bacteria, after infection, it is more troublesome, and there are strong sequelae.

There are cockroaches, rats, flies and flies. And these four evils are not conducive to our physical health, so we must protect ourselves in our daily life.

It will have a lot of harm to the human body, has a lot of effects, it is easy to have high fever, cold, allergies, scars on the body, itching and pain.

The four pests refer to cockroaches, rats, mosquitoes, and flies. These pests are not beneficial to people's bodies or to nature.

The four pests include flies, mosquitoes, rats, and cockroaches.

The harm of the four evils:

1. Flies: Flies breed and fly among garbage, manure pits, toilets, rotting animal carcasses, pus, blood, sputum and vomit, and feed on them. It carries tens of thousands of bacteria, viruses and parasite eggs on its body and abdomen.

Flies have the habit of eating, spitting and pulling, and it flies down to **, ** food will be contaminated by bacteria, viruses, and eggs, and when people eat contaminated food or use contaminated eating utensils, intestinal infectious diseases can occur into parasitic diseases.

2. Mosquitoes: Mosquitoes have blood-sucking habits, looking for human or animal amino acids when sucking blood, especially babies or ** delicate, mosquitoes can inject malaria parasites, filarial larvae, Japanese encephalitis virus and other saliva into the human body with saliva to make people infected with the disease, therefore, mosquitoes not only bite people to suck blood and affect sleep, but also transmit Japanese encephalitis, malaria, dengue fever, filariasis, etc.

3. Rats: The harm of rats is well known, it not only steals food, bites furniture, clothing, books and stationery, destroys buildings, bites off wires, etc., causing economic losses, and is the most serious in the "four pests", rats mainly spread plague, leptospirosis, lambiasis, epidemic hemorrhagic fever, endemic rash, typhoid fever and other infectious diseases through their ectoparasites (rat lice) bites and blood sucking or their excrement pollution.

4. Cockroaches: Cockroaches often crawl in toilets and garbage cans, sucking dirt, and their bodies are covered with bacteria, viruses and parasite eggs, and they also like to forage on people's food and leftovers, so that the utensils and food are contaminated, which can cause infectious diseases such as hepatitis A, dysentery, typhoid fever, cholera, or bacterial food poisoning, as well as parasitic diseases such as roundworms and hookworms.

In recent years, cockroaches have also been found to cause allergic rhinitis, bronchial asthma and other allergic diseases in some people.

Flies, mosquitoes, rats, cockroaches.

On February 12, 1958, the Communist Party of China issued the "Instructions on Eliminating the Four Evils and Stressing Health". It is proposed to complete the task of eradicating flies, mosquitoes, rats and sparrows in 10 years or less. Gradually, the sparrows were "rehabilitated" and replaced by bed bugs.

Later, due to changes in social life, bed bugs were replaced by cockroaches. Therefore, the "four pests" were eventually identified as flies, mosquitoes, rats, and cockroaches.

The "four pests" are flies, mosquitoes, rats, and cockroaches.

1. Mosquitoes can transmit malaria, Japanese encephalitis, filariasis, dengue fever, yellow fever and other diseases.

2. Flies carry countless bacteria and viruses, and there are dozens of diseases that can be transmitted, among which the common ones are: dysentery, hepatitis A, acute gastroenteritis, food poisoning, trachoma, polio, roundworm, cholera, etc.

3. Rats not only steal food, destroy buildings and farmland, but also spread plague, epidemic hemorrhagic fever, and leptospirosis.

4. Cockroaches not only bite the real thing, damage the raw materials, contaminate the food, but also spread dysentery, typhoid, polio, adenovirus, viral hepatitis and other diseases, in addition, can also make food mildew and produce carcinogenic aflatoxin.

But rats, flies, mosquitoes and cockroaches are an indispensable link in the energy conversion and balance of the biosphere. Without rats, flies, mosquitoes and cockroaches, there would be no balance in the biosphere. Therefore, it is necessary to treat the four evils correctly.

The "four pests" refer to mosquitoes, flies, rats, and cockroaches.

Rats, cockroaches, flies, mosquitoes.

The top three pests in <> are cockroaches, flies, and rats (mammals). 1. Cockroaches: The body is relatively flat, agile, can burrow into crevices, and can also invade furniture and household appliances, such as microwave ovens, cupboards, coffee machines, etc.

2. Flies: feed on organic matter, have the bad habit of defecating while eating, will cause contamination to food, and can spread dysentery. 3. Mouse:

It is often found in kitchens, sewers, toilets, etc., and can destroy everything that can be eaten, such as electrical wiring, garbage, wooden boards, etc.

1. What are the three major pests?

1. Cockroaches. 1) The body of the pest is relatively flat, can burrow into some small crevices, and can also invade furniture, household appliances, such as microwave ovens, cupboards, ice machines, coffee machines, etc.

2) The pest is agile, likes to lie dormant and nocturnal, and can pinpoint food when foraging, leaving scattered debris when eating.

2. Flies. 1) The pest feeds on organic matter and has the habit of defecating while eating, and its lifelong pursuit is to "eat, drink, pull, scatter, and live".

2) The pest can contaminate food and spread diseases such as dysentery.

3. Mouse:Rats are mammals that can be found in kitchens, sewers, toilets, ceilings, etc., destroying everything they can eat, including electrical wiring, planks, garbage, food scraps, etc.

2. What are the dangers of the three major pests to human beings?

1. Cockroaches. 1) The feet of this pest can carry a large number of pathogenic organisms, such as dysentery bacillus, salmonella, etc., which can transmit pneumonia, hepatitis and other diseases.

2) This pest can follow logistics and convoys through the province and spread the disease to other places.

2. Flies. 1) This pest reproduces very quickly, they will even lay eggs directly on food, and the eggs will hatch and become maggots.

2) Flies can transmit a variety of diseases through food, and places with flies will cause hidden dangers to food safety.

3. Mouse:Rats have a variety of germs on their bodies, and what they eat can also be infected with deadly viruses, such as the Black Death, which was caused by rats.

The four pests refer to mosquitoes, flies, rats and cockroaches, and the harm they cause to humans and the environment is as follows:1Spread the disease:

Mosquitoes are vectors of infectious diseases such as malaria and dengue fever, and flies also carry a variety of germs that can transmit gastrointestinal diseases. Rats and cockroaches carry pathogens that transmit serious diseases such as plague and cholera. 2.

Damage to hygiene: The four pests often haunt dirty environments such as garbage heaps and sewers, and they can contaminate food by touching food and utensils, leading to food poisoning and gastrointestinal diseases. 3.

Damage to property: Rats and cockroaches can gnaw on items such as wires, furniture, paper, etc., causing fires, electrical malfunctions, and property damage. Mosquitoes and flies can also damage crops in farmland, affecting agricultural production.

4.Disrupting life: The buzzing and jumping activities of the four evils can interfere with people's sleep and daily activities, causing inconvenience and nausea to the living environment.