In folk understanding of ill-health, the notion of 受风 shou-feng "exposure to wind" is often invoked as a trigger of illness.
These trends raise the possibility that exposures in early life may act as triggers of later illness, perhaps by reducing the numbers of cells in essential regions of the brain to below the level needed to maintain function in the face of advancing age (Cory-Slechta et al. 2005).
There are, of course, many external triggers for illness, such as environmental toxins or injuries that lead to a chain reaction of difficulties.
Certain complications may be triggered at this point of illness, especially if a treatment regimen is not yet employed.
The occurrence of illness among humans triggers swine testing, similarly, the occurrence of illness among swine triggers human testing.
This state of 'chronic critical illness' can also be triggered by other acute episodes of illness (e.g., acute lung injury), and its maintenance seems related to persistent systemic inflammation [ 25], which might act by maintaining the microbiome in the altered regime of increased virulence.
Thus, increasing severity of illness may have triggered both room transfers to provide a higher level of care or an isolation room, and may have resulted in delirium, in some of the patients studied.
This hypothesis has triggered hundreds of research studies, and has improved understanding of illness processes in cardiovascular disease.
The potential role of triggers of hypnozoite activation such as febrile illness (Shanks and White, 2013) are not accounted for.
However, if an outbreak or cluster of illness is too small, the method used currently for syndromic surveillance cannot trigger a statistical alert.
