What is HPV of group a9

There are more than 150 papillomaviruses, HPV a9 is one of the classifications of infection. This group includes the most dangerous strains of the virus for humans. HPV group a9 contains papillomaviruses, which trigger the appearance of oncology. These strains, getting into the body, cause not only changes in the skin, but are also capable of mutating into cancer. What will help prevent this? Timely diagnosis, accurate tests and medical treatment. Information about the virus can protect you and protect yourself.



  • 1Classification of HPV
  • 2Group of papillomaviruses a9
  • 3Transmission and prevention
  • 4Diagnosis of an oncogenic group

Classification of HPV


To date, more than 150 strains of papillomavirus have been identified. They have a different DNA structure and, accordingly, have different effects on the body.

In many cases, the infection leaves the body on its own, thanks to our immunity. Some patients are lifelong carriers of papillomavirus infection. The HPV DNA a9 is the most dangerous group. By what principle are strains classified?

In order to better track the "behavior" of the infection and prevent the unfavorable development of the disease, all strains were divided into groups according to the degree of carcinogenicity:

  • not oncogenic strains;
  • low oncogenic strains;
  • group of average oncogenic risk;
  • high oncogenic risk.

Also, HPV was divided by phylogenetic data. That is, in each group there are strains most similar to each other, they have similar clinical symptoms of manifestation, similar characteristics, and identical structure of DNA cells. Groups (HPV genera) are denoted by Greek letters (α, β, γ, etc.) and HPV types by Arabic numerals (eg, 18, 35, etc.).

To date, identified more than 100 genotypes. Lesions in the anogenital region and transformation into cancer cause the genus α (Alpha). Of these, some have a high carcinogenic risk, and some are not particularly dangerous.

Table of HPV genus α:

  • a1-32, 42;
  • a3 - 61, c62, 72, 81, 83, 84;
  • a5 - 26, 51, 69, 82;
  • a6 - 30, 53, 56, 66;
  • a7 - 18, 39, 45, 59, 68, 70;
  • a9 - 16, 31, 33, 35, 52, 58, 67;
  • a10 - 6, 11, 13, 44, 55, 74;
  • a11-34, 73;
  • a13-54;
  • a14- 90;
  • a15 - 71.

Of these, the high risk of carcinogenesis is the birth of a5, a6, a7, a9 and, respectively, the types of HPV that are related to this genus.

Group of papillomaviruses a9

In this group there are viruses that can cause maximum harm to the body.

A person who has an infection for a long time inside, with strong viral load and low immunity has the following clinical manifestations of HPV:

  • condyloma in the genital area;
  • non-condylomatous growths (appearance provokes 31, 33 strains);
  • genital warts in the anus and perineum;
  • condylomas on the penis, testicles, in the urethra in the male.

HPV genus a9 in men leads to oncology of the penis. However, this happens very rarely. Most men are just virus carriers.

In women, condylomas grow on the cervix of the uterus and the vaginal mucosa, which leads to erosion. In the absence of treatment, erosion becomes dysplasia. And the last stage of dysplasia is the initial stage of the oncological disease development.

From the time of infection by the genus HPV a9, to visible changes in the epithelium of the vaginal mucosa and uterus, it can take up to 20 years. When the papillomavirus is diagnosed at an early stage, it is successfully cured without the risk of recurrence. It is women who should carefully approach the prevention and diagnosis of the disease. It is necessary to visit a gynecologist at least once a year.

Transmission and prevention


Group a9 is also transmitted as other papilloma viruses. Infection occurs through microtraumas of the skin and mucous membranes of a person.

Methods of transmission:

  • sexual contact;
  • contact-household;
  • From mother to child during labor activity (in rare cases).

To date, even a condom does not give a 100% guarantee against infection. Latex product covers the member not completely. The virus can be on the skin at the base of the penis.

Strains a9 cause the appearance of neoplasms in the anogenital region, so in most cases, infection occurs through sexual relations. In the domestic way such papillomaviruses are transmitted very rarely.

To prevent the disease, people must be vaccinated at the age of 10-26 years. Especially it concerns women. In recent years, cervical cancer has become a leader among cancer diseases.

Two vaccines are used for vaccination:

  • Cervarix;
  • Gardasil.

The first drug protects only from cancer of the uterus, the second, in addition to oncology, prevents infection with strains that cause genital warts. The action of the vaccine is based on the development of antibodies to the virus by the body, as a result of which immunity will not allow the infection to linger inside.

The viruses of the papilloma will be killed if at the time of vaccination you were not infected with them. Therefore, it is recommended to vaccinate before the onset of sexual activity.

General recommendations for the prevention of papillomaviruses a9:

  • use a barrier contraceptive;
  • Do not let immunity decrease (depression, stress, overheating or hypothermia);
  • lead a healthy lifestyle;
  • regularly monitored for human papillomavirus;
  • increase immunity.

Immunity increases with a balanced diet, with enough vitamins and minerals in the body, with moderate physical exertion.

Diagnosis of an oncogenic group

Genital warts are visible immediately. The doctor at visual inspection will determine the presence of the disease. If the growths are flat and they are inside the vagina (cause strains 16, 31, 35), then appropriate procedures are performed to identify the disease.

Methods of diagnosis:

  • Colposcopy (colposcope examination and collection of biological material for HPV laboratory testing);
  • PCR analysis (will show the presence of the virus and the genotype of the infection);
  • dajzhen-test (the productive analysis on a genotype and presence of a virus);
  • a biopsy helps to study the histology of the build-up and to find deviations from the norm (if there is a suspicion of oncology).

Unfortunately, medicine has not yet created a remedy that could destroy the DNA structure of HPV. You can only monitor the infection, preventing its development in oncology and to remove growths on the skin.

The whole therapy consists of several joint steps:

  • antiviral therapeutic effects of drugs;
  • support of immunity;
  • strengthening of the body's vitamins;
  • removal of outgrowths.

Any treatment of HPV 16, 31, 33, 35, 52, 58, 67 requires the destruction of growths. It should be borne in mind that the viral load of the disease remains the same, even with the removal of neoplasms. Therefore it is quite possible that the growths will appear again and again. If they are not removed, they can expand, causing discomfort. If you get injured, you can start a strong inflammatory process.

Removal should be accompanied by simultaneous drug therapy. Only then there is the possibility to drown out the activity of papillomavirus. In any case, a mandatory systematic visit to the doctor for preventive examination is required, even if there is no more visible manifestation of the disease.

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