Scrub typhus
Meaning of scrub typhus: For the purposes of this Statement of Principles, scrub typhus means a clinical illness caused by Orientia tsutsugamushi, formerly known as Rickettsia tsutsugamushi.
Reasonable Hypothesis (RH) — Statement of Principles No. 77 of 2018
At least one of the following factors must as a minimum exist before it can be said that a reasonable hypothesis has been raised connecting scrub typhus or death from scrub typhus with the circumstances of a person's relevant service:
- (1)being exposed to Orientia tsutsugamushi within the 28 days before the clinical onset of scrub typhus;
Note: being exposed to Orientia tsutsugamushi is defined in the Schedule 1 - Dictionary.
- (2)inability to obtain appropriate clinical management for scrub typhus;
Aggravation-only factors: the factors in subsection 9(2) apply only to material contribution to, or aggravation of, the condition where it was suffered or contracted before or during (but did not arise out of) the person’s relevant service.
Balance of Probabilities (BoP) — Statement of Principles No. 78 of 2018
2 factors
At least one of the following factors must exist before it can be said that, on the balance of probabilities, scrub typhus or death from scrub typhus is connected with the circumstances of a person's relevant service:
- (1)being exposed to Orientia tsutsugamushi within the 28 days before the clinical onset of scrub typhus;
Note: being exposed to Orientia tsutsugamushi is defined in the Schedule 1 - Dictionary.
- (2)inability to obtain appropriate clinical management for scrub typhus;
Aggravation-only factors: the factors in subsection 9(2) apply only to material contribution to, or aggravation of, the condition where it was suffered or contracted before or during (but did not arise out of) the person’s relevant service.








