2003)
52% of a total of 526 tested households infected
Could not identify species, but previous studies in North Vietnam reported N. americanus in more than 95% of hookworm larvaeMinas Gerais, Brazil (Fleming et al. 2006)
63% infection rate of predominantly N. americanusKwaZulu-Natal, South Africa (Mabaso et al. 2004)
Inland areas had a prevalence rate of 9% of N. americanus
Coastal plain areas had a prevalence rate of 63% of N. americanusLowndes County, Alabama, United States 
35% infection rate of predominantly N. americanusThere have also been technological developments that may facilitate more accurate mapping of hookworm prevalence. Some researchers have begun to use geographical information systems (GIS) and remote sensing (RS) to examine helminth ecology and epidemiology. Brooker et al. utilized this technology to create helminth distribution maps of sub-Saharan Africa. By relating satellite derived environmental data with prevalence data from school-based surveys, they were able to create detailed prevalence maps. The study focused on a wide range of helminths, but interesting conclusions about hookworm specifically were found. As compared to other helminths, hookworm is able to survive in much hotter conditions and was highly prevalent throughout the upper end of the thermal range.Improved molecular diagnostic tools are another technological advancement that could help improve existing prevalence statistics. Recent research has focused on the development of a DNA-based tool that can be used for diagnosis of infection, specific identification of hookworm, and analysis of genetic variability in hookworm populations. Again this can serve as a major tool for different public health measures against hookworm infection.
Cavity may refer to:

Biology and healthcare
Body cavity, a fluid-filled space in many animals where organs typically develop
Gastrovascular cavity, the primary organ of digestion and circulation in cnidarians and flatworms
Dental cavity or tooth decay, damage to the structure of a tooth
Lung cavity, an air-filled space within the lung

Radio frequency resonance
Microwave cavity or RF cavity, a cavity resonator in the radio frequency range, for example used in particle accelerators
Optical cavity, the cavity resonator of a laser
Resonant cavity, a device designed to select for waves of particular wavelengths

Other uses
Cavity (band), a sludge metal band from Miami, Florida
Cavity method, a mathematical method  to solve some mean field type of models
Cavity wall, a wall consisting of two skins with a cavity

See also
Cavitation, the phenomenon of partial vacuums forming in fluid, for example, in propellers
Cavitary pneumonia, a type of pneumonia in which a hole is formed in the lung
Cavity Search (disambiguation)
Hollow (disambiguation)