Table 3. Lower threshold MFI scores with corresponding % seroprevalence.

Virus	Lower MFI threshold (log MFI)	% seroprevalence (Binomial exact 95% CI)	MFI median values (range) for seropositive animals
Hendra virus	347 (5.85)	43.2% (37.5%-49%)	6,813 (353–23,922)
Cedar virus	317 (5.76)	26.6% (21.7%-31.9%)	3,074 (326–13,759)
Tioman virus	584 (6.37)	95.7% (92.7%-97.7%)	2,121 (629–4,972)
Australian bat lyssavirus	Na	0% (0.0%- 1.22%)	Na

Lower thresholds including median fluorescence intensity (MFI) and log MFI and seroprevalence with confidence intervals (CI) for Hendra virus, Cedar virus, Tioman virus and Australian bat lyssavirus for Grey-headed flying foxes sampled in Adelaide, South Australia between September 2015 and February 2018 (n = 301). na = not applicable.