1. What is the effect of the Vaxigrip vaccine?
The vaccine Vaxigrip is produced to protect against strains of the influenza virus that cause influenza. Influenza is a disease caused by strains of influenza virus, these viruses are constantly evolving, increasing in types due to combinations or changes in the genetic code. Therefore, influenza virus is a major threat to human health, new strains have been found with higher virulence, the risk of infection is faster, into a dangerous epidemic.
Influenza can occur all year round, but winter - spring is when the virus develops and is most likely to spread through the respiratory tract. In people with weakened immune systems or with other medical conditions, the flu virus can cause severe respiratory complications, affecting health and even life-threatening.
Vaxigrip vaccine is produced from influenza virus cultured on embryonic chicken eggs, then separated and inactivated. After purification, the influenza virus is inactivated with some other components to obtain the vaccine, preserving the appropriate temperature and humidity until it is injected into the human body. The Vaxigrip vaccine is issued regularly to update new strains of influenza viruses recommended by the World Health Organization.
When vaccinated with this Vaxigripvaccine, your body will make its own antibodies, which will help prevent flu because the antigens of the virus contained in the vaccine help recognize the immune system to create antibodies to prevent disease.
Currently, Vaxigrip vaccine is indicated for vaccination of adults and children over 6 months of age. People can get this vaccine at vaccination facilities and centers and register it as a service vaccine.
2. Information about vaccination with Vaxigrip . vaccine
Characteristics of Vaxigrip vaccine and vaccination are as follows:
2.1. Modulation form
Vaxigrip vaccine is prepared in doses of 0.5ml (for adults) and 0.25ml (for children), contained in a syringe.
The usual dose of Vaxigrip vaccine is 0.5 ml
2.2. Dosage
The formulation of Vaxigrip vaccine consists of 2 types (0.25ml and 0.5ml) which are suitable for the dosage recommended by the manufacturer:
Children from 6 to 35 months old injected dose of 0.25ml.
Adults and children from 36 months old inject a full dose of 0.5ml.
For children under 9 years of age who have never been vaccinated against influenza or have never had the flu, a second booster dose of Vaxigrip should be given, at least 4 weeks apart from the first dose. Immunity is well maintained for about 6-12 months, so annual vaccination is recommended.
2.3. How to use
Vaxigrip vaccine is injected deep subcutaneously or intramuscularly, absolutely not intravenously. Medical staff will be fully trained in injection techniques as well as vaccine use to achieve the best effect. The injection site is usually in the upper arm, which will need to be disinfected to prevent infection, and each small injection usually does not cause bleeding or serious inflammation.
2.4. Unwanted effects
When receiving Vaxigrip vaccine, patients may experience some of the following side effects:
On-site reaction
At the injection site of Vaxigrip vaccine, there may be redness, pain, stiffness, itching, even local bruising, etc. It is recommended to monitor this reaction, usually this condition will subside after a few days. days until the wound is completely healed.
But in some cases of infection, the injection site will become increasingly painful and painful, and serious pus will need to be treated carefully.
After the injection, you may experience local pain and swelling
Whole body reaction
Patients after vaccination with Vaxigrip, especially young children or the elderly, may experience reactions: flu-like syndrome, body fatigue, irritability, digestive disorders, loss of appetite, etc.
These post-injection reactions usually don't last long and go away on their own after 1-2 days, but if the symptoms get worse, take the patient to a medical facility for monitoring.
Uncommon reactions
Cases of reactions after vaccination with Vaxigrip are uncommon such as: swollen lymph nodes in the groin, neck, armpits, bleeding, flu-like symptoms, etc.
Rare reactions
A small number of patients after vaccination with Vaxigrip recorded the following conditions: Nerve pain, sensory disturbances, convulsions, transient thrombocytopenia, neurological disorders, etc. These neurological effects should be monitored. medical care and intervene if necessary.
3. Subjects contraindicated to vaccinate with Vaxigrip
Vaxigrip vaccine is considered benign, however it may cause hypersensitivity reactions in subjects allergic to any of the vaccine components including: Chicken protein, Neomycin, ovalbumin, formaldehyde, octoxynol -9.
Vaxigrip vaccine is contraindicated in subjects with hypersensitivity reactions to vaccine components
In addition, the following subjects should postpone vaccination with Vaxigrip to avoid the risk of complications such as:
People who are suffering from an acute illness, especially a respiratory disease or a high fever.
Patients with hematological diseases, especially hemostasis disorders.
People with immunodeficiency, especially in chronic serious medical diseases, HIV, using immunosuppressive drugs in the treatment of malignancies, etc.
Pregnant and lactating women can also be vaccinated with Vaxigrip vaccine because the virus component is an inactivated virus, there is no risk of causing disease and affecting the embryo, affecting the baby. If you still have questions, you can consult with your doctor and pharmacist to choose the right time to vaccinate with Vaxigrip.