About percent of u. s. senators and u. s. representatives serving in congress are women.

The answer is around 19.3%

Of the two houses, there are 22 women in the senate and 84 women in the house of representatives. Since there are overall 535 members, when you do the calculations you see that it's somewhere around 19.3 percent of the congress. There have been tendencies to increase this number and ensure higher equality, but as of now nothing is changing.

The constant presence of diseases or infectious agents within a given geographic area or population group. it may also refer to the usual prevalence of a given disease with such area or group. it includes holoendemic and hyperendemic diseases. a holoendemic disease is one for which a high prevalent level of infection begins early in life and affects most of the child population, leading to a state of equilibrium such that the adult population shows evidence of the disease much less commonly than do children (malaria in many communities is a holoendemic disease). a hyperendemic disease is one that is constantly present at a high incidence and/or prevalence rate and affects all groups equally. so probably family history.