Antibody Prevalence and Risk Factors Associated with Rickettsia spp. in a Pediatric Cohort: SFGR Remains Underdiagnosed and Underreported in El Salvador
Abstract
:1. Introduction
2. Materials and Methods
2.1. Study Recruitment
2.2. Ethics Statement
2.3. Antibody Screening
2.4. Data Analysis
3. Results
4. Discussion
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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ELISA IgG and/or IgM | ELISA IgG | ELISA IgM | |||||||
---|---|---|---|---|---|---|---|---|---|
Positive N (%) or Mean ± SD | Negative N (%) or Mean ± SD | Model 1 Odds Ratio (95% CI) ꜝ | Positive N (%) or Mean ± SD | Negative N (%) or Mean ± SD | Model 2 Odds Ratio (95% CI) | Positive N (%) or Mean ± SD | Negative N (%) or Mean ± SD | Model 3 Odds Ratio (95% CI) | |
N = 121 | N = 887 | N = 26 | N = 971 | N = 95 | N = 662 | ||||
Participant characteristics | |||||||||
Male | 58 (47.9) | 478 (53.9) | 1.81 (1.01, 3.25) † | 17 (65.4) | 442 (45.5) | 5.33 (1.40, 20.25) † | 41 (43.2) | 328 (48.0) | |
Febrile at time of enrollment | 32/117 (27.4) | 540 (64.2) | 0.36 (0.18, 0.71) ‡ | 7 (26.2) | 322/922 (34.9) | 25/91 (27.5) | 228/642 (35.5) | 0.38 (0.17, 0.82) † | |
Enrolled in the wet season | 81 (66.9) | 503 (56.7) | 14/26 (53.8) | 561 (57.8) | 67 (70.5) | 380 (57.4) | 2.527 (1.25, 5.11) ‡ | ||
Age (years) | 10.6 ± 4.6 | 8.5 ± 4.7 | 1.16 (1.08, 1.23) * | 12.0 ± 4.1 | 8.6 ± 4.7 | 1.18 (1.03, 1.35) † | 10.2 ± 4.7 | 8.3 ± 4.8 | 1.15 (1.08, 1.24) * |
Household occupancy and composition | |||||||||
N living in household | 5.2 ± 2.1 | 5.5 ± 3.0 | 5.0 ± 2.0 | 5.5 ± 3.0 | 5.3 ± 2.1 | 5.5 ± 3.1 | |||
N kids in household | 2.5 ± 1.3 | 2.5 ± 1.4 | 2.4 ± 1.4 | 2.5 ± 1.4 | 2.6 ± 1.3 | 2.5 ± 1.3 | |||
Mother’s last year of education | 5.1 ± 4.0 | 5.4 ± 4.1 | 1.07 (0.99, 1.15) | 4.2 ± 4.6 | 5.4 ± 4.1 | 5.5 ± 4.0 | 5.4 ± 4.0 | 1.11 (1.02, 1.21) † | |
Father’s last year of education | 5.5 ± 4.2 | 6.0 ± 4.4 | 5.0 ± 4.5 | 5.9 ± 4.4 | 5.7 ± 4.1 | 6.1 ± 4.4 | |||
N beds in home | 4.7 ± 1.9 | 4.8 ± 2.3 | 4.7 ± 1.9 | 4.8 ± 2.2 | 4.7 ± 1.9 | 4.8 ± 2.3 | |||
Household poverty indicators | |||||||||
Agriculture as primary household income source | 69/110 (62.7) | 513/816 (62.9) | 13/22 (59.1) | 564/894 (63.1) | 57/88 (64.8) | 389/607 (64.1) | |||
Type of cooking fuel used | |||||||||
Firewood | 14/119 (11.8) | 126/886 (14.2) | 1/25 (4.0) | 139/970 (14.3) | 13 (13.7) | 95/660 (14.4) | |||
Gas | 6/119 (5.0) | 50/886 (5.6) | 1/25 (4.0) | 53/970 (5.5) | 5 (5.3) | 37/660 (5.6) | |||
Both | 99/119 (83.2) | 710/886 (80.1) | 23/25 (92.0) | 778/970 (80.2) | 77 (81.0) | 248/660 (37.6) | |||
Type of floor in bedroom | |||||||||
Bare earth | 96/119 (80.7) | 695 (78.4) | 18/25 (72.0) | 765 (78.8) | 79 (83.2) | 514/661 (77.8) | |||
Cement | 23/119 (19.3) | 192 (21.7) | 7/25 (28.0) | 206 (21.2) | 0.26 (0.08, 0.86) † | 16 (16.8) | 147/661 (22.2) | ||
Type of wall material in bedroom | |||||||||
Blocks | 21/119 (17.6) | 177/885 (20.0) | 2/25 (8.0) | 191/969 (19.7) | 19 (20.0) | 132/559 (20.0) | |||
Adobe | 58/119 (48.7) | 357/885 (40.3) | 12/25 (48.0) | 401/969 (41.4) | 46 (48.4) | 279/559 (42.3) | |||
Other | 40/119 (33.6) | 351/885 (39.7) | 11/25 (44.0) | 377/969 (38.9) | 30 (31.6) | 248/559 (37.6) | |||
Family uses outside latrine for bathroom | 108/120 (90.0) | 823/886 (92.9) | 0.25 (0.11, 0.56) ‡ | 21/25 (84.0) | 901/970 (92.9) | 0.10 (0.03, 0.42) ‡ | 88 (92.6) | 618/660 (93.6) | |
Potable water in the house | 112/120 (93.3) | 776 (87.5) | 24/25 (96.0) | 854 (88.0) | 89 (93.7) | 581/660 (87.9) | |||
No electricity | 58/116 (50.0) | 308/876 (35.2) | 2.41 (1.31, 4.45) ‡ | 12/24 (50.0) | 351/957 (36.7) | 46/92 (50.0) | 233/651 (35.8) | ||
House has fowl (chickens, turkeys, and/or ducks) | 53/113 (46.9) | 471/860 (54.8) | 0.49 (0.27, 0.87) † | 9/25 (36.0) | 511/937 (54.5) | 44/88 (50.0) | 336/636 (52.8) | ||
House has cats | 17/113 (15.0) | 121/860 (14.1) | 2/25 (8.0) | 135/937 (14.4) | 15/88 (15.8) | 88/636 (13.3) | |||
House has dogs | 60/113 (53.1) | 462/860 (53.7) | 11/25 (44.0) | 507/937 (54.1) | 50/88 (56.8) | 335/636 (52.7) | |||
Proxy assessment of vector-borne disease exposure and knowledge: household Chagas disease vector exposure and parent or legal guardian Chagas disease knowledge | |||||||||
Knows what a “chinche” is | 74/120 (61.7) | 610 (68.8) | 13/25 (52.0) | 663 (68.3) | 0.13 (0.03, 0.49) ‡ | 61 (64.2) | 449/661 (67.9) | ||
Knows about Chagas disease | 17/120 (14.2) | 178 (20.1) | 6/25 (24.0) | 188 (19.4) | 11 (11.6) | 126/661 (19.1) | |||
Has seen chinches inside house within the past year | 28/120 (23.3) | 283 (31.9) | 6/25 (24.0) | 302 (31.1) | 22 (23.2) | 218/661 (33.0) | |||
Someone in household has been bitten by a chinche in the past year | 18/120 (15.0) | 161/884 (18.2) | 0.39 (0.16, 0.99) † | 3/25 (12.0) | 176/968 (18.2) | 15 (15.8) | 132/660 (20.0) | ||
House has been fumigated in the past year | 7/120 (5.8) | 90/885 (10.2) | 2/25 (8.0) | 94/969 (9.7) | 5 (5.3) | 66/660 (10.0) | |||
Family health concerns | |||||||||
Someone in the household sought clinical care in the past year | 90/119 (16.0) | 599/867 (69.1) | 18/25 (72.0) | 665/950 (70.0) | 73/94 (77.7) | 455/646 (70.4) | |||
Someone in the household sought clinical care for an infection in the past year | 59/118 (50.0) | 341/865 (39.4) | 2.17 (1.21, 3.91) ‡ | 12/25 (48.0) | 386/948 (40.7) | 48/93 (51.6) | 257/645 (39.8) | 1.90 (0.99, 3.62) |
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Dye-Braumuller, K.C.; Aquino, M.S.R.; Zellars, K.; Waltz, H.; Meyer, M.; Gual-Gonzalez, L.; Self, S.C.W.; Kanyangarara, M.; Nolan, M.S. Antibody Prevalence and Risk Factors Associated with Rickettsia spp. in a Pediatric Cohort: SFGR Remains Underdiagnosed and Underreported in El Salvador. Pathogens 2022, 11, 1241. https://doi.org/10.3390/pathogens11111241
Dye-Braumuller KC, Aquino MSR, Zellars K, Waltz H, Meyer M, Gual-Gonzalez L, Self SCW, Kanyangarara M, Nolan MS. Antibody Prevalence and Risk Factors Associated with Rickettsia spp. in a Pediatric Cohort: SFGR Remains Underdiagnosed and Underreported in El Salvador. Pathogens. 2022; 11(11):1241. https://doi.org/10.3390/pathogens11111241
Chicago/Turabian StyleDye-Braumuller, Kyndall C., Marvin Stanley Rodríguez Aquino, Kia Zellars, Hanna Waltz, Madeleine Meyer, Lídia Gual-Gonzalez, Stella C. W. Self, Mufaro Kanyangarara, and Melissa S. Nolan. 2022. "Antibody Prevalence and Risk Factors Associated with Rickettsia spp. in a Pediatric Cohort: SFGR Remains Underdiagnosed and Underreported in El Salvador" Pathogens 11, no. 11: 1241. https://doi.org/10.3390/pathogens11111241