Chickenpox is an infectious disease , benign in most cases. It is the varicella zoster virus that is responsible for it.
Chickenpox is a very contagious childhood disease. The virus is transmitted in the air from one individual to another by the saliva droplets. The disease is contagious from the incubation period (the child is already infected with the virus but is not yet sick), and of course during the entire period of illness.
Most children get chickenpox during an epidemic . When it occurs, it is very difficult to avoid it.
Chickenpox is more severe in adults, and may be severe in immunocompromised individuals and pregnant women.
After being sick, children are protected against the disease throughout their lives because their bodies have learned to make chickenpox antibodies that will fight the virus.
Some children escape chickenpox, so they can catch it in adulthood since they have not been immunized.
The chickenpox virus can transmit two diseases. Chicken pox is the expression of the first infection, that is to say of the primary infection.
Then, the virus can nestle at the end of the nerves in nerve structures that are called nerve ganglia. The virus can thus be reactivated in adulthood, at the time of fatigue, stress, a period of immunosuppression ... and cause the appearance of shingles in the affected nerve area.
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Author: Dr. Ada Picard.