Recessive infection

Medical terminology

Silent infection is also called subclinical infection. Means pathogen After invading the human body, only the body will produce Specificity Of immune response , not causing or only causing slight tissue damage Therefore, it does not show any symptoms, signs, or even biochemical changes in clinical practice. It can only be achieved through immunology It can only be found after inspection.

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brief introduction

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viral infection It is an extremely complex and constantly developing biology and Pathology The current so-called various types of viral infection are described from a certain side or angle, which of course cannot fully reflect the true nature of things. For example, acute type Subacute Type and chronic type; Distinguished according to the severity of infection symptoms Dominant infection And recessive infection; According to the infection process, symptoms and pathological change The main occurrence site of Local infection and Systemic infection Etc. This distinction is only for the convenience of understanding, memory or work. It should also be pointed out that there are overlaps and overlaps between them, such as in systemic infection Dominant infection And recessive infection, the same viral infection Sometimes it causes dominant infection, sometimes it causes recessive infection, etc.

Recessive infection

Including anything that does not cause clinical symptoms viral infection 。 Probably Viruses No final invasion or arrival target organ Therefore, there is no or very little clinical symptoms. That is to say, virus invasion and Airframe defense The struggle between the two causes the virus to invade to the appropriate stage and stop. This kind of infection is the most common, and people and animals naturally get anti Viruses Specific immunity The main source of force. At the same time, recessive infection has very important epidemiology Significantly, recessive infected animals still spread to the outside world Viruses And become Infectious agent The possibility of. The occurrence of recessive infection depends on Viruses The nature of is more determined by the immune biological state of animal organism. Same as above Viruses May cause Dominant infection , may also cause recessive infection. For example, Japanese encephalitis Viruses It can often cause acute fatal infection in humans and animals (such as horses), but in most people and animals fauna Medium, Japanese encephalitis virus The main manifestation is recessive infection. Although transient viremia may occur, it does not show obvious symptoms. After viremia, the virus quickly disappeared in the body. Similar recessive infections are also found in many other viral infection , such as some human and animal adenovirus as well as Enterovirus infection Etc.

Whether there is normal bacteria spectrum in human and animal Viruses Spectrum? This is a very meaningful issue that needs to be discussed. It is certain that virus carrying phenomenon in humans and animals is common, for example, reovirus Herpes virus 、 adenovirus as well as Small RNA virus and coronavirus And many other viruses. However, it should be pointed out that different from the normal bacterial spectrum in humans and animals Viruses Even if there may be no serious harm, it will never bring any benefits to the body.

Form of expression

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When the body has strong immunity and a small number of pathogens, virulence When it is weak, there is no obvious disease and it becomes a recessive infection; When the interaction between pathogenic bacteria and human immunity is in balance, the pathogenic bacteria will be hidden in the focus and become Latent infection ； When the human body has weak immunity, a large number of pathogenic bacteria invade, and the virulence is strong, obvious diseases will appear, which will become Dominant infection 。

Analysis of related terms

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mycoplasma infection

mycoplasma It is the smallest known creature that can live freely, and it is also the smallest Prokaryotic cell 。 It is a kind of Viruses Large, smaller than bacteria Prokaryotic microorganism Their outstanding feature is that there is no cell wall 。 Therefore, the cells are soft, changeable in shape and highly polymorphic. Observation under electron microscope mycoplasma Cells, visible with cell membrane , there are ribosome 、 RNA And circular DNA. mycoplasma Widely exists in soil, sewage insect 、 vertebrate And the human body, animals, plants and humans Pathogen one of.

mycoplasma It is a kind of micro pathogen different from bacteria and fungi, Mycoplasma There are more than 80 kinds of mycoplasmas, including mycoplasma pneumoniae （MP）， Mycoplasma hominis （MH）、 Ureaplasma urealyticum (UU) and Mycoplasma genitalium （ MG ）, caused by the former pneumonia , the latter three cause urination Genital tract infection 。

Urogenital infections mycoplasma Later, the disease caused by male is Nongonococcal urethritis The female is mainly nongonococcal urogenital tract inflammation. In men, urinary tract irritation, burning and dysuria , a few have frequent urination. Urethral orifice light Redness and swelling The secretion is thin, and some patients have no symptoms. In women, leukorrhea increases, urethra burns or causes pelvic inflammation, Fallopian tube Caused by inflammation Infertility , abortion and ectopic pregnancy 。

mycoplasma 、 chlamydia After infecting the human body, it first invades the column epithelial cells And grow and multiply inside the cell, and then enter Monocyte macrophage system Intracellular proliferation. because mycoplasma 、 chlamydia It multiplies inside the cell, leading to infection cell death , while still evading the host Immune defense Function, intermittently protected. Mycoplasma chlamydia The pathogenic mechanism of Cellular metabolism , dissolve and destroy cells and cause Lysozyme Release, Metabolites Of Cytotoxicity , causing allergy and Autoimmunity 。

When the human body is infected mycoplasma 、 chlamydia After, generate Specificity But this immunity is weak and lasts for a short time. Therefore, mycoplasma Chlamydia infection It is easy to cause continuity, Repeated infection , and recessive infection. cellular immunity In terms of, most active cured chlamydia Patients, give corresponding antigen Intracutaneous injection When, it often causes Delayed allergy 。 such allergy available lymphocyte conduct Passive transfer 。 This Immunity Probably T cell Mediated. humoral immunity In terms of mycoplasma 、 Chlamydia infection After, on serum And local secretion neutralizing antibody 。 Neutralizing antibodies can prevent chlamydia yes host cell Can also be absorbed by Recuperation enhance Phagocyte Intake.

Mycoplasma chlamydia The most common site of invasion in the female genital tract is cervix , which can cause endometritis 、 Salpingitis Pelvic inflammatory disease can also cause Acute urethritis and Vestibular magnadenitis 。 Pregnant women, if any mycoplasma 、 Chlamydia infection , the fetus passes through birth canal May cause Neonatal ophthalmia and pneumonia 。

Infection in women mycoplasma 、 chlamydia After infection, symptoms may not occur. Even if there are symptoms, they vary with different infection sites, for example, cervical infection may occur cervical erosion , cervical mucosal edema Leukorrhea (purulent) Contact bleeding Etc, Fallopian tube Infection can cause Hypogastric pain , low back pain and infertility. Generally speaking, these symptoms are nonspecific.

Mycoplasma chlamydia Available through Sexual contact It can also be spread through hands, eyes, towels, clothes, bath, toilet and swimming pool. Occurrence with multiple people Sexual relations , The man has urethritis , poor hygiene habits, etc. Therefore, the key to prevent infection is to keep clean and do a good job in personal health care.

bacterial infection

Bacterial infection is pathogenic bacteria or Conditional pathogen invasion Blood circulation Acute disease caused by growth, reproduction, toxin and other metabolites Systemic infection , clinically shiver 、 High fever 、 rash 、 Arthralgia and Hepatosplenomegaly Some may have Septic shock And migratory lesions. Pathogenic Microbes Acute systemic infection caused by invasion of blood from wound or infection focus in the body. Clinically, some patients may also have irritability, limb syncope and Cyanosis , fine pulse, fast breathing, decreased blood pressure, etc. Especially the elderly, children chronic disease or Low immune function Person, untimely treatment and complication Can be developed into septicemia perhaps Sepsis 。

Suggestions

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As long as we pay attention to developing good living habits in daily life, combining work with rest, being calm, and properly exercising to strengthen our physique, we can generally increase the body's pathogen Resistance and tolerance to avoid disease.

In particular, parents should be careful Hand foot mouth disease Please wash your hands and change your clothes before getting close to the child. When you see cute children, you should also refrain from kissing their small mouths. In addition, parents should also pay attention to personal hygiene To avoid infection Viruses Without knowing it.

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