Details:

Alternative Title:
PLoS One
Personal Author:
Khan, Salah Uddin ; Gurley, Emily S. ; Hossain, M. Jahangir ; Nahar, Nazmun ; Sharker, M. A. Yushuf ; ... More +
Khan, Salah Uddin ; Gurley, Emily S. ; Hossain, M. Jahangir ; Nahar, Nazmun ; Sharker, M. A. Yushuf ; Luby, Stephen P. Less -
Description:
Background

Drinking raw date palm sap is a risk factor for human Nipah virus (NiV) infection. Fruit bats, the natural reservoir of NiV, commonly contaminate raw sap with saliva by licking date palm’s sap producing surface. We evaluated four types of physical barriers that may prevent bats from contacting sap.

Methods

During 2009, we used a crossover design and randomly selected 20 date palm sap producing trees and observed each tree for 2 nights: one night with a bamboo skirt intervention applied and one night without the intervention. During 2010, we selected 120 trees and randomly assigned four types of interventions to 15 trees each: bamboo, dhoincha (local plant), jute stick and polythene skirts covering the shaved part, sap stream, tap and collection pot. We enrolled the remaining 60 trees as controls. We used motion sensor activated infrared cameras to examine bat contact with sap.

Results

During 2009 bats contacted date palm sap in 85% of observation nights when no intervention was used compared with 35% of nights when the intervention was used [p<0.001]. Bats were able to contact the sap when the skirt did not entirely cover the sap producing surface. Therefore, in 2010 we requested the sap harvesters to use larger skirts. During 2010 bats contacted date palm sap [2% vs. 83%, p<0.001] less frequently in trees protected with skirts compared to control trees. No bats contacted sap in trees with bamboo (p<0.001 compared to control), dhoincha skirt (p<0.001) or polythene covering (p<0.001), but bats did contact sap during one night (7%) with the jute stick skirt (p<0.001).

Conclusion

Bamboo, dhoincha, jute stick and polythene skirts covering the sap producing areas of a tree effectively prevented bat-sap contact. Community interventions should promote applying these skirts to prevent occasional Nipah spillovers to human.


Subjects:
[+]
Animals Arecaceae Chiroptera Cross-Over Studies Henipavirus Infections Humans Nipah Virus Polyethylene Saliva Sasa Trees
Source:
PLoS One. 2012; 7(8).
Pubmed ID:
22905160
Pubmed Central ID:
PMC3414453
Document Type:
Journal Article
Funding:
3U01CI00628-01/CI/NCPDCID CDC HHS/United States ; 5U01CI00298-05/CI/NCPDCID CDC HHS/United States
3U01CI00628-01/CI/NCPDCID CDC HHS/United States ; 5U01CI00298-05/CI/NCPDCID CDC HHS/United States Less -
Place as Subject:
Bangladesh
Collection(s):
CDC Public Access
Main Document Checksum:
[+]
urn:sha256:c4cd4b15eda52dd1ae37068aae0db224be5a5eaac898bacd53ce58b9827f8eb7
Download URL:
https://stacks.cdc.gov/view/cdc/22722/cdc_22722_DS1.pdf
File Type:

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