one looks how it gets trapped in tree pollen (https://doi.org/10.1063/5.0055845) and has the possibility for jetstream transport (http://physics.ruh.ac.lk/ab/pub/443.pdf). in addition to it staying in the intestinal track for up to six months (https://doi.org/10.1186/s12876-021-01905-3) ... probably no way out for many of these folks.
one looks how it gets trapped in tree pollen (https://doi.org/10.1063/5.0055845) and has the possibility for jetstream transport (http://physics.ruh.ac.lk/ab/pub/443.pdf). in addition to it staying in the intestinal track for up to six months (https://doi.org/10.1186/s12876-021-01905-3) ... probably no way out for many of these folks.