It is a highly contagious disease so it is usually acquired during childhood by direct contact with respiratory secretions or the liquid of the vesicles of the cutaneous lesions of a sick person. The period of greatest risk of contagion is one to three days before the rash appears until it comes off vesicles and injuries are covered with scabs. It usually arises from an epidemic in kindergartens and schools.
After the entry of the virus to the body for the first time takes place an incubation period of approximately two weeks after which the person develops high fever, this is followed by the appearance of a reddish rash that develops into a vesicle filled with liquid that breaks to stay covered by a crust, these lesions are accompanied by a very intense itching , they usually disappear after about 7 to 10 days, when these lesions become infected by scratching can leave permanent scars.
After its resolution this disease does not occur, however if it comes into contact again with this virus develops then herpes zoster or shingles is characterized by similar injuries but which are distributed on territories of specific nerves, most common being its location at intercostal level or in the path of the sciatic nerve or branches of the trigeminal nerve at the level of the face. Resolved once shingles may occur again in the same location by activation of the viruses that are hosted on a permanent basis in the ganglia of nerve roots from which can be reactivated to situations such as stress, anxiety, or able to weaken the immune system disorders.
When chickenpox occurs in adulthood it causes more severe paintings characterized by the development of pneumonia, which usually requires hospitalization in intermediate care or intensive care units since it can be accompanied by a condition potentially mortal as it is respiratory failure.
Varicella can be prevented through vaccination, there are vaccines available in several countries, it is recommended the application of single-dose in children in preschool and school-age; When applies to 13 years or older the scheme changed to two doses separated by an interval of 4 to 8 weeks.
Article contributed by the team of collaborators.