Children are most commonly infected. Estimated prevalence rates among children in various world regions are 4â28%. Ascariasis: Ascaris, or roundworm, infection is the common helminthic infection in humans, with an estimated worldwide prevalence of 1 billion. The causative organism, A lumbricoides, is cosmopolitan in distribution, being most abundant in tropical countries.
Definition of hollow. 1  1 : an unfilled space : cavity, hole in the hollow of a tree. 2  2 : a depressed or low part of a surface; especially : a small valley or basin.
(May 2015) Valley is a neighborhood in northwestern Providence, Rhode Island. It is bounded to the north by Chalkstone Avenue, to the east by Raymond Street, to the south by Harris Avenue and Atwells Avenue, and to the west by Academy Avenue. The population of the neighborhood, as of 2000, was 4,765.