How are parasitic diseases transmitted? What is the infectious period of the parasite

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Due to the rise in temperature, parasite germination, poor environmental disinfection will lead to a large area of dogs infected with parasites, according to the investigation, a pet hospital within a month to treat 15 cases of dog diseases infected by parasites. Among them, there were 3 cases of mixed infection with parvovirus, 11 cases caused by whipworm, and 1 case of pyoderma between the toes.

One. The most common routes of transmission of parasites are as follows

1.Soil: Intestinal parasites survive in above-ground soil during the infection period. For example, roundworm eggs and whipworm eggs develop into infected eggs in fecal-contaminated soil; The eggs of hookworms and strongyloides stercos develop into infective larvae in soil.

2.Infection is related to contact with soil: water, many parasites can reach the body by drinking water, mainly vegetables and fish.

Vegetables are often the main route of parasite transmission. For example, infected roundworm eggs, whipworm eggs, infected larvae of hookworms, and pre-existing cysts can be transmitted by eating unwashed or undercooked vegetables, and scabies mites can be transmitted by direct contact with patients**.

2. The main ways and methods of parasite infection are as follows

1.Oral infection:

The infection period of many parasites can be through food and water. Such as roundworms, whipworms, pinworms, etc. Infection by ** Some parasites are actively invaded by ** during their infection period.

2.Self-infection:

Some parasites can cause autologous repeated infections in the host, such as the eggs of Hymengallena brevis, which hatch into hexagocypian in the small intestine, and the larvae that develop into adults in the small intestine.

Susceptible refers to a lack of immunity to parasites.

3. Factors influencing the epidemic of parasitic diseases

1.Natural factors.

Including climatic factors such as temperature, humidity, rainfall, light, as well as geographical environment and biological populations. Climatic factors affect the growth and development of parasites in the outside world, such as a warm and humid environment conducive to the development of worm eggs and larvae in the soil; Climate affects the breeding and reproduction of intermediate hosts or vector arthropods, and also affects the development and growth of parasites in their bodies, such as temperatures below 15 to 16 degrees Celsius or above Celsius, Plasmodium parasites cannot develop in mosquitoes. The warm and humid climate is not only conducive to the growth and reproduction of mosquitoes, but also suitable for mosquitoes to suck blood and increase the transmission of malaria.

Temperature affects the invasiveness of parasites.

2.Biological factors.

The life history develops into indirect parasites, in which the presence of an intermediate host or arthropod is necessary for the epidemic of these parasitic diseases.

The seven routes of transmission of the parasite are:

Contact infection, inhalation infection, self-infection, retrograde infection, biological factors, natural factors, social factors.

Precautionary measures: 1. Wash your hands before eating and after using the toilet.

2. Pay attention to personal hygiene and take a bath frequently.

3. Cook meat and seafood thoroughly. Drinking water should be boiled thoroughly. Toxoplasma gondii, for example, is infected by humans through meat that is not thoroughly cooked.

The world population has 1 3 infections, and Germans also have a 50% infection rate. And the French, who prefer to eat meat that is not thoroughly cooked, have an infection rate of 80%.

4. Eliminate mosquitoes and other insects that transmit diseases.

5. After being infected with parasites, seek medical attention in time. For example, in the case of sleeping sickness, it is the key to do it as soon as possible.

a. The period of infection of the human body.

Since parasitology is concerned with the relationship between the main parasite and the person, a should be chosen.

Parasites can change the behavior of their hosts to achieve better reproduction and survival on their own. Humans are less responsive to some parasites that live in the brain, such as Toxoplasma gondii, which lives in the brain for life.

The stage in which the parasite can infect the human body is called the infection stage or infection stage. Option A, the period of infection in the human body.

Option A, the period when the parasite can infect the human body is its infection period.

Since parasitology is concerned with the relationship between the main parasite and the person, a should be chosen.

Summary. The most common types of parasites that are not transmitted by insects are parasitic viruses, which can be spread by contact, such as contact with contaminated water, food, or clothing, or through the air. To prevent the spread of parasitic viruses, the following measures should be taken:

1.Enhanced hygiene: Hygiene should be enhanced, especially in public places, and regular cleaning and disinfection should be carried out to prevent the spread of the virus.

2.Avoid contact with contaminated items: Contact with contaminated water, food, or clothing should be avoided to prevent the spread of the virus.

3.Avoid contact with people with the virus: Contact with people with the virus should be avoided to prevent the spread of the virus.

4.Pay attention to personal hygiene: You should pay attention to personal hygiene, wash your hands frequently, and change your clothes frequently to prevent the spread of the virus.

5.Regular check-ups: Regular check-ups and prompt medical attention should be done to prevent the spread of the virus.

The most common types of parasites that are not transmitted by insects are parasitic viruses, which can be spread by contact, such as contact with contaminated water, food, or clothing, or through the air. In order to prevent the spread of parasitic viruses, the following measures should be taken:1

Enhanced hygiene: Hygiene should be enhanced, especially in public places, and regular cleaning and disinfection should be carried out to prevent the spread of the virus. 2.

Avoid contact with contaminated items: Contact with contaminated water, food, or clothing should be avoided to prevent the spread of the virus. 3.

Avoid contact with people with the virus: Contact with people with the virus should be avoided to prevent the spread of the virus. 4.

Pay attention to personal hygiene: You should pay attention to personal hygiene, wash your hands frequently, and change your clothes frequently to prevent the spread of the virus. 5.

Regular check-ups: Regular check-ups and timely medical attention should be done to prevent the spread of the virus.

Excuse me, but please go into more detail?

The most common non-insect transmission of parasites to address the problem is parasitic viruses, which can be transmitted by contact, such as contact with contaminated water or food, or through the air, such as coughing or sneezing. In addition, there are some other parasites, such as worms, that can be spread by contact, such as contact with contaminated water or food, or through the air, such as coughing or sneezing. Expand on some related content:

Parasitic viruses can be spread through contact, such as contact with contaminated water or food, or through the air, such as coughing or sneezing. In addition, there are some other parasites, such as worms, that can be spread by contact, such as contact with contaminated water or food, or through the air, such as coughing or sneezing. In addition, there are other parasites, such as mosquitoes, that can be transmitted through bites, such as malaria, yellow fever, and West Nile virus, among others.

In addition, there are some other parasites, such as spirochetes, that can be spread by contact, such as contact with contaminated water or food, or through the air, such as coughing or sneezing. In conclusion, there are many ways to transmit parasites in a non-insect manner, including contact transmission, airborne transmission, bite transmission, etc. These modes of transmission can lead to parasitic diseases in people, so effective preventive measures should be taken to prevent the spread of parasitic diseases.

A parasite is an organism that spwells most of its life on another animal, called a host or host, and at the same time, causes damage to the parasitic animal. It is characterized by all organisms that parasitize or attach themselves to a host or host in order to obtain the nutrients or shelter necessary for their survival, development or reproduction.

Hosts parasitized by parasites at different stages of development:

1. Intermediate host: refers to the larvae of the parasite or the host of the parasitic brigade in the asexual reproductive stage. If there are more than two intermediate hosts, they can be divided into the first according to the order of parasitism.

First, the second intermediate host, etc., for example, some species of freshwater snails and freshwater fish are Clonorchis sinensis and Clonorchis sinensis, respectively.

First, the second intermediate host.

2. Final host: refers to the host parasitized by the adult parasite or the sexual reproductive stage. For example, humans are the definitive host of schistosomes.

3. Relay host: The larvae of some parasites invade abnormal hosts, cannot develop into adults, and remain in the larval state for a long time. For example, the juvenile worm of Pargotia waiseri, which enters the body of a wild boar that is not an abnormal host, cannot develop into an adult worm, and can remain a juvenile insect for a long time.

Wild boars are the host of the worm's succession.

The seven routes of transmission of the parasite are:

Contact infection, inhalation infection, self-infection, retrograde infection, biological factors, natural factors, social factors. Answer.

Precautionary measures: 1. Wash your hands before eating and after using the toilet.

2. Pay attention to personal hygiene and take a bath frequently.

3. Cook meat and seafood thoroughly. Drinking water should be boiled thoroughly. Toxoplasma gondii, for example, is infected by humans through meat that is not thoroughly cooked.

The world population has 1 3 infections, and Germans also have a 50% infection rate. And the French, who prefer to eat meat that is not thoroughly cooked, have an infection rate of 80%.

4. Eliminate mosquitoes and other insects that transmit diseases.

5. After being infected with parasites, seek medical attention in time. For example, in the case of sleeping sickness, it is the key to do it as soon as possible.

Category B infectious diseases include leptospirosis, schistosomiasis, and malaria.

Category C: hydatid disease, filariasis, kala-azar disease.

Non-statutory infectious parasitic diseases: soil-derived nematode disease, Guangzhou strongyloidiasis.