There are multiple definitions:
'occult' HBV infection(English)
- defined as HBV DNA detection in serum or in the liver by sensitive diagnostic tests in HBsAg-negative patients with or without serologic markers of previous viral exposure. OBI seems to be higher among subjects at high risk for HBV infection and with liver disease
- HBc, HBV, HBsAg, HCV, HIV, NAT, SENV, TTV
- Infection, Liver disease
- https://doi.org…07.2004.00406.x
Oldenburg Burnout Inventory(English)
- used e.g. for testing academic burnout. Also denoted as OLBI
- OLBI
- Stress (test), Psychology
- https://doi.org…urn.2014.11.001