Is the current decline in malaria burden in sub-Saharan Africa due to a decrease in vector population?

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Is the current decline in malaria burden in sub-Saharan Africa due to a decrease in vector population? / Meyrowitsch, Dan Wolf; Pedersen, Erling Møller; Alifrangis, Michael; Scheike, Thomas; Malecela, Mwelecele N.; Magesa, Stephen M.; Derua, Yahya A.; Rwegoshora, Rwehumbiza T.; Michael, Edwin; Simonsen, Paul Erik.

In: Malaria Journal, Vol. 10, No. 188, 2011.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Meyrowitsch, DW, Pedersen, EM, Alifrangis, M, Scheike, T, Malecela, MN, Magesa, SM, Derua, YA, Rwegoshora, RT, Michael, E & Simonsen, PE 2011, 'Is the current decline in malaria burden in sub-Saharan Africa due to a decrease in vector population?', Malaria Journal, vol. 10, no. 188. https://doi.org/10.1186/1475-2875-10-188

APA

Meyrowitsch, D. W., Pedersen, E. M., Alifrangis, M., Scheike, T., Malecela, M. N., Magesa, S. M., Derua, Y. A., Rwegoshora, R. T., Michael, E., & Simonsen, P. E. (2011). Is the current decline in malaria burden in sub-Saharan Africa due to a decrease in vector population? Malaria Journal, 10(188). https://doi.org/10.1186/1475-2875-10-188

Vancouver

Meyrowitsch DW, Pedersen EM, Alifrangis M, Scheike T, Malecela MN, Magesa SM et al. Is the current decline in malaria burden in sub-Saharan Africa due to a decrease in vector population? Malaria Journal. 2011;10(188). https://doi.org/10.1186/1475-2875-10-188

Author

Meyrowitsch, Dan Wolf ; Pedersen, Erling Møller ; Alifrangis, Michael ; Scheike, Thomas ; Malecela, Mwelecele N. ; Magesa, Stephen M. ; Derua, Yahya A. ; Rwegoshora, Rwehumbiza T. ; Michael, Edwin ; Simonsen, Paul Erik. / Is the current decline in malaria burden in sub-Saharan Africa due to a decrease in vector population?. In: Malaria Journal. 2011 ; Vol. 10, No. 188.

Bibtex

@article{ecdabf08c07547028b2eb9bdef2b7cde,
title = "Is the current decline in malaria burden in sub-Saharan Africa due to a decrease in vector population?",
abstract = "ABSTRACT: BACKGROUND: In sub-Saharan Africa (SSA), malaria caused by Plasmodium falciparum has historically been a major contributor to morbidity and mortality. Recent reports indicate a pronounced decline in infection and disease rates which are commonly ascribed to large-scale bed net programmes and improved case management. However, the decline has also occurred in areas with limited or no intervention. The present study assessed temporal changes in Anopheline populations in two highly malaria-endemic communities of NE Tanzania during the period 1998-2009. METHODS: Between 1998 and 2001 (1st period) and between 2003 and 2009 (2nd period), mosquitoes were collected weekly in 50 households using CDC light traps. Data on rainfall were obtained from the nearby climate station and was used to analyze the association between monthly rainfall and malaria mosquito populations. RESULTS: The average number of Anopheles gambiae and Anopheles funestus per trap decreased by 76.8% and 55.3%, respectively over the 1st period, and by 99.7% and 99.8% over the 2nd period. During the last year of sampling (2009), the use of 2368 traps produced a total of only 14 Anopheline mosquitoes. With the exception of the decline in An. gambiae during the 1st period, the results did not reveal any statistical association between mean trend in monthly rainfall and declining malaria vector populations. CONCLUSION: A longitudinal decline in the density of malaria mosquito vectors was seen during both study periods despite the absence of organized vector control. Part of the decline could be associated with changes in the pattern of monthly rainfall, but other factors may also contribute to the dramatic downward trend. A similar decline in malaria vector densities could contribute to the decrease in levels of malaria infection reported from many parts of SSA.",
author = "Meyrowitsch, {Dan Wolf} and Pedersen, {Erling M{\o}ller} and Michael Alifrangis and Thomas Scheike and Malecela, {Mwelecele N.} and Magesa, {Stephen M.} and Derua, {Yahya A.} and Rwegoshora, {Rwehumbiza T.} and Edwin Michael and Simonsen, {Paul Erik}",
year = "2011",
doi = "10.1186/1475-2875-10-188",
language = "English",
volume = "10",
journal = "Malaria Journal",
issn = "1475-2875",
publisher = "BioMed Central",
number = "188",

}

RIS

TY - JOUR

T1 - Is the current decline in malaria burden in sub-Saharan Africa due to a decrease in vector population?

AU - Meyrowitsch, Dan Wolf

AU - Pedersen, Erling Møller

AU - Alifrangis, Michael

AU - Scheike, Thomas

AU - Malecela, Mwelecele N.

AU - Magesa, Stephen M.

AU - Derua, Yahya A.

AU - Rwegoshora, Rwehumbiza T.

AU - Michael, Edwin

AU - Simonsen, Paul Erik

PY - 2011

Y1 - 2011

N2 - ABSTRACT: BACKGROUND: In sub-Saharan Africa (SSA), malaria caused by Plasmodium falciparum has historically been a major contributor to morbidity and mortality. Recent reports indicate a pronounced decline in infection and disease rates which are commonly ascribed to large-scale bed net programmes and improved case management. However, the decline has also occurred in areas with limited or no intervention. The present study assessed temporal changes in Anopheline populations in two highly malaria-endemic communities of NE Tanzania during the period 1998-2009. METHODS: Between 1998 and 2001 (1st period) and between 2003 and 2009 (2nd period), mosquitoes were collected weekly in 50 households using CDC light traps. Data on rainfall were obtained from the nearby climate station and was used to analyze the association between monthly rainfall and malaria mosquito populations. RESULTS: The average number of Anopheles gambiae and Anopheles funestus per trap decreased by 76.8% and 55.3%, respectively over the 1st period, and by 99.7% and 99.8% over the 2nd period. During the last year of sampling (2009), the use of 2368 traps produced a total of only 14 Anopheline mosquitoes. With the exception of the decline in An. gambiae during the 1st period, the results did not reveal any statistical association between mean trend in monthly rainfall and declining malaria vector populations. CONCLUSION: A longitudinal decline in the density of malaria mosquito vectors was seen during both study periods despite the absence of organized vector control. Part of the decline could be associated with changes in the pattern of monthly rainfall, but other factors may also contribute to the dramatic downward trend. A similar decline in malaria vector densities could contribute to the decrease in levels of malaria infection reported from many parts of SSA.

AB - ABSTRACT: BACKGROUND: In sub-Saharan Africa (SSA), malaria caused by Plasmodium falciparum has historically been a major contributor to morbidity and mortality. Recent reports indicate a pronounced decline in infection and disease rates which are commonly ascribed to large-scale bed net programmes and improved case management. However, the decline has also occurred in areas with limited or no intervention. The present study assessed temporal changes in Anopheline populations in two highly malaria-endemic communities of NE Tanzania during the period 1998-2009. METHODS: Between 1998 and 2001 (1st period) and between 2003 and 2009 (2nd period), mosquitoes were collected weekly in 50 households using CDC light traps. Data on rainfall were obtained from the nearby climate station and was used to analyze the association between monthly rainfall and malaria mosquito populations. RESULTS: The average number of Anopheles gambiae and Anopheles funestus per trap decreased by 76.8% and 55.3%, respectively over the 1st period, and by 99.7% and 99.8% over the 2nd period. During the last year of sampling (2009), the use of 2368 traps produced a total of only 14 Anopheline mosquitoes. With the exception of the decline in An. gambiae during the 1st period, the results did not reveal any statistical association between mean trend in monthly rainfall and declining malaria vector populations. CONCLUSION: A longitudinal decline in the density of malaria mosquito vectors was seen during both study periods despite the absence of organized vector control. Part of the decline could be associated with changes in the pattern of monthly rainfall, but other factors may also contribute to the dramatic downward trend. A similar decline in malaria vector densities could contribute to the decrease in levels of malaria infection reported from many parts of SSA.

U2 - 10.1186/1475-2875-10-188

DO - 10.1186/1475-2875-10-188

M3 - Journal article

C2 - 21752273

VL - 10

JO - Malaria Journal

JF - Malaria Journal

SN - 1475-2875

IS - 188

ER -

ID: 33870182