Details:

Alternative Title:
J Health Pollut
Personal Author:
Etiang', Nancy A. ; Arvelo, Wences ; Galgalo, Tura ; Amwayi, Samwel ; Gura, Zeinab ; ... More +
Etiang', Nancy A. ; Arvelo, Wences ; Galgalo, Tura ; Amwayi, Samwel ; Gura, Zeinab ; Kioko, Jackson ; Omondi, Gamaliel ; Patta, Shem ; Lowther, Sara A. ; Brown, Mary Jean Less -
Description:
Background.

Lead exposure is linked to intellectual disability and anemia in children. The United States Centers for Disease Control and Prevention (CDC) recommends biomonitoring of blood lead levels (BLLs) in children with BLL ≥5 μg/dL and chelation therapy for those with BLL ≥45 μg/dL.

Objectives.

This study aimed to determine blood and environmental lead levels and risk factors associated with elevated BLL among children from Owino Uhuru and Bangladesh settlements in Mombasa County, Kenya.

Methods.

The present study is a population-based, cross-sectional study of children aged 12–59 months randomly selected from households in two neighboring settlements, Owino Uhuru, which has a lead smelter, and Bangladesh settlement (no smelter). Structured questionnaires were administered to parents and 1–3 ml venous blood drawn from each child was tested for lead using a LeadCare ® II portable analyzer. Environmental samples collected from half of the sampled households were tested for lead using graphite furnace atomic absorption spectroscopy.

Results:

We enrolled 130 children, 65 from each settlement. Fifty-nine (45%) were males and the median age was 39 months (interquartile range (IQR): 30–52 months). BLLs ranged from 1 μg/dL to 31 μg/dL, with 45 (69%) children from Owino Uhuru and 18 (28%) children from Bangladesh settlement with BLLs >5 μg/dL. For Owino Uhuru, the geometric mean BLL in children was 7.4 μg/dL (geometric standard deviation (GSD); 1.9) compared to 3.7 μg/dL (GSD: 1.9) in Bangladesh settlement (p<0.05). The geometric mean lead concentration of soil samples from Owino Uhuru was 146.5 mg/Kg (GSD: 5.2) and 11.5 mg/Kg (GSD: 3.9) (p<0.001) in Bangladesh settlement. Children who resided <200 m from the lead smelter were more likely to have a BLL ≥5 μg/dL than children residing ≥200 m from the lead smelter (adjusted odds ratio (aOR): 33.6 (95% confidence interval (CI): 7.4–153.3). Males were also more likely than females to have a BLL ≥5 μg/dL (39, 62%) compared to a BLL<5 μg/dL [aOR: 2.4 (95% CI: 1.0–5.5)].

Conclusions.

Children in Owino Uhuru had significantly higher BLLs compared with children in Bangladesh settlement. Interventions to diminish continued exposure to lead in the settlement should be undertaken. Continued monitoring of levels in children with detectable levels can evaluate whether interventions to reduce exposure are effective.

Participant Consent.

Obtained

Ethics Approval.

Scientific approval for the study was obtained from the Ministry of Health, lead poisoning technical working group. Since this investigation was considered a public health response of immediate concern, expedited ethical approval was obtained from the Kenya Medical Research Institute and further approval from the Mombasa County Department of Health Services. The investigation was considered a non-research public health response activity by the CDC.

Competing Interests.

The authors declare no competing financial interests.


Subjects:
[+]
Blood Childhood Environmental Exposure Lead Research
Source:
J Health Pollut. 2018; 8(18)
Pubmed Central ID:
PMC6239056
Document Type:
Journal Article
Place as Subject:
Kenya
Collection(s):
CDC Public Access
Main Document Checksum:
[+]
urn:sha256:c42469293dafe25f004818fd9c0d5927a8b127e4192ceb44d8dfa5f5576f993d
Download URL:
https://stacks.cdc.gov/view/cdc/61277/cdc_61277_DS1.pdf
File Type:

Supporting Files

• 	i2156-9614-8-18-180605-f01.gif	gif
  	i2156-9614-8-18-180605-f01.jpg	jpeg
  	i2156-9614-8-18-180605.nxml	xml

More +