A retrospective cohort investigation of seroprevalence of Marburg virus and ebolaviruses in two different ecological zones in Uganda

Table 1 Summary of participant cohort groups and corresponding seroprevalences and risk ratios

Study Cohorts	Number sampled (N = 724)	Marburg virus seroprevalence (%)	Sudan virus (SUDV) seroprevalence (%)	Filovirus seroprevalence (%)	Filovirus (Marburg & SUDV) seroprevalence Risk Ratio (95%CI)
Low-Risk group (Luweero district)	291 (40.2%)	0	3 (1.1%)	3 (1.1%)	Reference^a
High risk groups (Ibanda and Kamwenge districts)	433 (59.8%)	1 (0.2%)	15 (3.5%)	16 (3.7%)	3.6 (1.1–12.2) ^c
Miners only	161 (22.2%)	1 (0.6%)	8 (4.9%)	9 (5.6%)	5.4 (1.5–19.7) ^c
Family/household member of miner^d	138 (19.1%)	0	4 (2.9%)	4 (2.9%)	2.8 (0.64–12.4)
Non-miners within 50 km of Kitaka mine ^b	134 (18.5%)	0	3 (2.2%)	3 (2.2%)	2.2 (0.44–10.6)

^aAll other groups (exposure groups) were compared to the unexposed group as control
^bSeropositivity among people who live within 50 km of Kitaka cave was not significantly different from miners or their family members
^cStatistically significant
^dOne person seropositive for SUDV in this exposure group was also seropositive for Bundibugyo virus

ISSN: 1471-2334