A dangerous viral disease is tick-borne encephalitis, transmitted by the bite of an infected ixodid tick. Pathology is difficult and does not respond to effective treatment. Doctors call vaccination one of the methods of protection. For vaccination, the EnceVir vaccine is often used. Instructions for use recommend vaccination against ailment according to a certain scheme.
Description of the drug
Almost 100% protection against encephalitis virus (tick-borne virus ) is made possible by the modern Russian-made EnceVir vaccine. It contains inactivated whole virus cells that underwent special treatment and cannot provoke the development of the disease. One ampoule contains chicken embryo protein, aluminum hydroxide and donor albumin. The advantage of the vaccine is the absence of preservatives, farmaldehyde and antibiotics. The liquid externally resembles a suspension and does not have extra (extraneous) inclusions.
The vaccine "EnceVir" is positioned as an agent for use as a means of stimulating the production of cellular, humoral immunity against tick-borne encephalitis virus. According to the developers, the drug is able to protect the human body from many strains of viral illness, common in Asia and Europe. It should be borne in mind that the drug has a number of contraindications and can only be prescribed by a doctor.
Indications
Prevention of encephalitis virus (tick-borne virus) infection is the main indication for the use of Encevir vaccine. The manufacturer recommends the use of an inactivated vaccine for people over 18 years of age who live in an unfavorable territory. The drug, entering the body, is able to train the immune system to resist pathogens. Vaccination is necessary for the production of immunoglobulins (antibodies) relative to virus cells.
Tick-borne encephalitis symptoms
Pathology causes damage to the brain, spinal cord. The incubation period is usually 10-14 days. Symptoms of infection will depend on the form of the viral illness. The disease is characterized by the appearance of the following symptoms:
- fever;
- weakness;
- lack of appetite;
- tachycardia attacks;
- vomiting
- photophobia;
- nausea;
- cramps
- hypersensitivity of the skin (meningeal form);
- involuntary tipping of the head back;
- hypersomnia;
- chills.
The focal form of the disease is considered the most unfavorable. In this case, an infection of the substance of the brain and spinal cord occurs, which leads to serious violations of the respiratory, cardiac systems. To protect yourself from such negative consequences of an ixodid tick bite, it is necessary to get vaccinated with modern drugs, for example, EnceVir.
Instructions for use
The vaccine (dosage of 0.5 ml) is injected into the deltoid muscle. The first vaccination can be done after examining the patient and eliminating the presence of contraindications. The vaccine can be administered according to one of two schemes recommended by the manufacturer.
According to one scheme, revaccination should be carried out 2 months after the initial administration of the drug. A third immunization should happen in 12 months. According to the second scheme, re-vaccination is done after 5-7 months. After a year, a third vaccination with EnceVir is carried out.
The vaccine can be used for emergency immunization. In this case, the second portion of the drug is administered 14 days after the initial vaccination, and the last - after 12 months. Immunity will begin to be produced 28 days after the first injection of the drug.
Revaccination is indicated every three years. Doctors say that all drugs designed to prevent this ailment are interchangeable.
Pediatric Vaccine Use
Initially, there was a practice of immunizing small patients with this medication. However, the EnceVir vaccine is not currently being administered to children. This is due to the frequent development of side effects, which were recorded by doctors. Their connection with the introduction of the drug is proven.
The EnceVir Neo vaccine was developed, which is approved for use in pediatric practice. The manufacturer recommends using a tool for vaccinating children from 3 years.
Immunization should begin in the autumn and winter. The second vaccine is given no earlier than 2 weeks after the first. The interval should not exceed 30 days. The last, third, vaccine is administered 3 months after the second. Revaccination for children is carried out annually. If you miss two vaccinations, immunization should be started again.
Children under 4 years old are injected with 0.25 ml of the drug. The volume of a single dose for children 4-6 years old is 0.5 ml of the drug EnceVir Neo.
Contraindications
The tool can only be prescribed if the patient does not have certain contraindications. The vaccine "EnceVir" instruction is prohibited to use in the following cases:
- chicken protein intolerance;
- hypersensitivity to substances in the vaccine;
- bronchial asthma;
- age up to 18 years;
- diabetes;
- blood pathology;
- negative reaction to previous immunization;
- thyrotoxicosis;
- cardiovascular failure;
- severe pathologies of the liver, kidneys;
- epilepsy;
- tuberculosis;
- pregnancy;
- exacerbation of chronic pathologies.
Immunization can be carried out only a month after a full recovery after a previous illness or when remission is achieved. After childbirth, the vaccine can be administered to a woman as early as 14 days.
Side effects
The immune system may negatively respond to the administration of the inactivated EnceVir vaccine. Instructions for use warns that the reaction develops both locally and at a general level. Most often, pain (sometimes swelling) occurs at the injection site. There may also be a slight fever, general weakness, headache.
The manufacturer - the company "Microgen" - warns that negative reactions can develop within the first two days after immunization. On the third day, side effects disappear. With a significant deterioration in well-being against the background of the drug, you should immediately consult a doctor.
EnceVir: reviews
Domestic vaccine has earned both negative and positive recommendations. Many adult patients have been well tolerated. Immunization is recommended only after examination to avoid the development of side effects described by the manufacturer.
Negative experience with the use of the drug is associated with its use in pediatrics. Negative reactions from the protective system in this case developed very often. Therefore, for the vaccination of children, you should use only the children's version of the EnceVir vaccine or use imported analogues that are much better tolerated by the body.