It may also reflect differences in exposure routes; or, it may suggest that incubation in the field can lead to increased concentrations or virulence of the organism.
They do not monitor in the area - which suggests that they don't think it is a major exposure route.
Further studies of the use of these products and other possible exposure routes (i.e., dermal) may reveal other risks.
Composite variables were developed for three major exposure routes (tap water, bottled water, fecal matter).
The main exposure routes are inhalation, ingestion, absorption through the skin, and entry through a cut or wound in the skin.
The same may be said about risks from several exposure routes together.
Humans are exposed to phthalates by multiple exposure routes (predominantly dermal), while toxicological testing is done via oral exposure.
Each of these exposure routes and severity of damage can vary depending on the potential carcinogen in question.
However, it is unclear which exposure routes dominate because of data gaps.
The major human exposure route to BPA is diet, including ingestion of contaminated food and water.