<P> In temperate countries , chickenpox is primarily a disease of children , with most cases occurring during the winter and spring , most likely due to school contact . It is one of the classic diseases of childhood , with the highest prevalence in the 4 -- 10 - year - old age group . Like rubella , it is uncommon in preschool children . Varicella is highly communicable , with an infection rate of 90 % in close contacts . In temperate countries , most people become infected before adulthood , and 10 % of young adults remain susceptible . </P>
<P> In temperate countries , chickenpox is primarily a disease of children , with most cases occurring during the winter and spring , most likely due to school contact . It is one of the classic diseases of childhood , with the highest prevalence in the 4 -- 10 - year - old age group . Like rubella , it is uncommon in preschool children . Varicella is highly communicable , with an infection rate of 90 % in close contacts . In temperate countries , most people become infected before adulthood , and 10 % of young adults remain susceptible . </P>
why is chicken pox more common in spring
why is chicken pox more common in spring
most likely due to school contact
most likely due to school contact