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Table 1 Antibody prevalence to rift valley fever phlebovirus or Crimean-Congo hemorrhagic fever orthonairovirus among pygmies in the East region of Cameroon

From: Serological evidence of rift valley fever Phlebovirus and Crimean-Congo hemorrhagic fever orthonairovirus infections among pygmies in the east region of Cameroon

Age range (years) Sex ratio (M/F) Average age ± SD Number of positive samples for the specified population/no. tested (%)a Total
   Abong Mbang Lomié Messok Mindourou  
Rift Valley Fever Phlebovirus (RVFV)
≤20 0.3 17.3 ± 3.7 0 0/1 0/3 0/8 0/12
21–40 2.0 32.9 ± 5.4 0/2 0/13 0/4 7/32 (21.9) 7/51 (13.7)
41–60 1.5 50.5 ± 5.5 0/4 2/12 (16.7) 0/2 5/31 (16.1) 7/49 (14.3)
61–80 1.5 69.2 ± 5.4 0/2 0/4 1/2 (50.0) 2/17 (11.8) 3/25 (12.0)
Total 1.4 44.4 ± 16.4 0/8 2/30 (6.7) 1/11 (9.1) 14/88 (15.9) 17/137 (12.4)
Crimean-Congo Hemorrhagic Fever Orthonairovirus (CCHFV)
≤20 0.3 17.3 ± 3.7 0 0/1 0/3 0/8 0/12
21–40 2.0 32.9 ± 5.4 1/2 (50.0) 0/13 0/4 0/32 b 1/51 (2.0)
41–60 1.5 50.5 ± 5.5 1/4 (25.0) 1/12 (8.3) 0/2 3/31 (9.7) 5/49 (10.2)
61–80 1.5 69.2 ± 5.4 0/2 0/4 0/2 0/17b 0/25
Total 1.4 44.4 ± 16.4 2/8 (25.0) 1/30 (3.3) 0/11 3/88 (3.4) 6/137 (4.4)
  1. RVFV rift valley fever phlebovirus, CCHFV Crimean-Congo hemorrhagic fever orthonairovirus
  2. aThere was no significant difference between the rates of RVFV Ig G in the four studied districts (P > 0.05) while the rate of CCHFV Ig G was relatively higher in Abong Mbang compared to other studied districts (P = 0.004)
  3. bCCHFV assay showed indeterminate result for a 35 years old woman and a 65 years old man originating from the district of Mindourou