Why you still infected despite vaccination?
The ability you caught the dangerous infectious disease even after being vaccinated is absolutely probable.
Explaining the re-infected after vaccination
According to Assoc. Dr. Pham Nhat An, deputy director of the Central Children's Hospital, said the vaccination would minimize the possibility of illness, but because of their immune response of the body when the vaccine is not strong enough to still have possible - though rare, some cases.
effective prevention of influenza is usually achieved after vaccination is 2 weeks
, however, cases of illness are usually lighter. According to BS, the cases were vaccinated but still get sick for many reasons. The most common are cases were vaccinated against measles, mumps, chickenpox, rubella, but still suffer from this disease.
In some cases, patients have been vaccinated at least two doses of measles vaccine and still get sick may be due to atopic children with special immunity. Sometimes children are in the stage by taking a number of immunosuppressive drugs treat asthma, nephrotic syndrome, rheumatological conditions ... making vaccine immunogenicity is not effective.
As long your service does not last forever
Immunology formed in the body by responding to the vaccine will weaken over time. Sometimes you will need a booster injection to stimulate the immune system work effectively.
For example, immunity to pertussis weaken over time, so the Centers for Disease Control and Prevention USA ( CDC) recommends that all adults aged 19-64 years should stimulate the activity of the body's immune system by one dose of the vaccine booster Tdap (tetanus, diphtheria, pertussis). Whooping cough is a disease that can be fatal in children and is usually transmitted from adults.
To enhance immunity to tetanus, the CDC recommends a booster injection when they are 11-12 years old, even when they were injected with doses specifically directed at a young age, and a booster for adults every 10 years.
If you comply with the recommended immunization schedule, the vaccine will promote almost 100% effective .
Do not inject sufficient doses of vaccine effective to optimize
If you do not inject sufficient doses of preventive vaccine, you will not gain effective immunity protects the body before the disease.
A typical example is the aquatic vaccine bean created the first injection of about 78-79% immunity effect. After injection of the recommended dose Monday, immune obtained for mild illness was around 90% and nearly 100% for severe disease. In other words, about 10% more likely to develop the vaccine will not work for mild chickenpox, but almost no one to be fully immunized will suffer severe illness. This means you need at least 02 nasal vaccination varicella vaccine to get the highest preventive effect.
The body does not have enough time to create an immune response
usually takes about two weeks for the body at least maybe you can build a fence enough healthy immune after vaccination. If you become infected shortly after vaccination, your body has not been immune to create a vaccine so recently taken up not protect you.
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