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Uganda

The Impact of Control Interventions on Malaria Burden in Young Children in a Historically High-Transmission District of Uganda: A Pooled Analysis of Cohort Studies from 2007 to 2018

May 21, 2020 - 06:46 -- Open Access
Author(s): 
Kamya MR, Kakuru A, Dorsey G, et al.
Reference: 
Am J Trop Med Hyg. 2020 May 18

There is limited evidence on whether malaria elimination is feasible in high-transmission areas of Africa. Between 2007 and 2018, we measured the impact of malaria control interventions in young children enrolled in three clinical trials and two observational studies in Tororo, Uganda, a historically high-transmission area. Data were pooled from children aged 0.5–2 years.

NOT Open Access | Mean platelet counts are relatively decreased with malaria but relatively increased with endemic Burkitt Lymphoma in Uganda, Tanzania, and Kenya

May 13, 2020 - 14:54 -- NOT Open Access
Author(s): 
Peprah S, Ogwang MD, Mbulaiteye SM, et al.
Reference: 
Br J Haematol. 2020 May 12

Platelet counts are decreased in Plasmodium falciparum malaria, which is aetiologically linked with endemic Burkitt lymphoma (eBL). However, the pattern of platelet counts in eBL cases is unknown. We studied platelet counts in 582 eBL cases and 2 248 controls enrolled in a case‐control study in Uganda, Tanzania and Kenya (2010–2016). Mean platelet counts in controls or eBL cases with or without malaria‐infection in controls versus eBLcases were compared using Student’s t‐test.

Effect of long-lasting insecticidal nets with and without piperonyl butoxide on malaria indicators in Uganda (LLINEUP): a pragmatic, cluster-randomised trial embedded in a national LLIN distribution campaign

April 20, 2020 - 09:38 -- Open Access
Author(s): 
Staedke SG, Gonahasa S, Donnelly MJ, et al.
Reference: 
Lancet. 2020 Apr 18;395(10232):1292-1303

Long-lasting insecticidal nets (LLINs) are the primary malaria prevention tool, but their effectiveness is threatened by pyrethroid resistance. We embedded a pragmatic cluster-randomised trial into Uganda’s national LLIN campaign to compare conventional LLINs with those containing piperonyl butoxide (PBO), a synergist that can partially restore pyrethroid susceptibility in mosquito vectors.

Correlates of uptake of optimal doses of sulfadoxine-pyrimethamine for prevention of malaria during pregnancy in East-Central Uganda

April 18, 2020 - 13:55 -- Open Access
Author(s): 
Mbonye K. Martin, Kirwana B. Venantius, Ndugga Patricia, Kikaire Bernard, Baleeta Keith, Kabagenyi Allen, Asiimwe Godfrey, Twesigye Rogers, Kadengye T. Damazo and Byonanebye M. Dathan
Reference: 
Malaria Journal 2020 19:153, 15 April 2020

In 2012, the World Health Organization recommended that pregnant women in malaria-endemic countries complete at least three (optimal) doses of intermittent preventive treatment (IPTp) using sulfadoxine-pyrimethamine (SP) to prevent malaria and related adverse events during pregnancy. Uganda adopted this recommendation, but uptake remains low in East-Central and information to explain this low uptake remains scanty. This analysis determined correlates of uptake of optimal doses of IPTp-SP in East-Central Uganda.

NOT Open Access | Relationships between measures of malaria at delivery and adverse birth outcomes in a high-transmission area of Uganda

April 10, 2020 - 16:39 -- NOT Open Access
Author(s): 
Ategeka J, Kakuru A, Kajubi R, Wasswa R, Ochokoru H, Arinaitwe E, Adoke Y, Jagannathan P, R Kamya M, Muehlenbachs A, Chico RM, Dorsey G
Reference: 
J Infect Dis. 2020 Apr 2. pii: jiaa156

Clinical trials of interventions for preventing malaria in pregnancy often use measures of malaria at delivery as their primary outcome. Although the objective of these interventions is to improve birth outcomes, data on associations between different measures of malaria at delivery and adverse birth outcomes are limited.

Rapid shifts in the age-specific burden of malaria following successful control interventions in four regions of Uganda

March 31, 2020 - 15:30 -- Open Access
Author(s): 
Simon P. Kigozi, Ruth N. Kigozi, Isabel Rodriguez-Barraquer, et al.
Reference: 
Malaria Journal 2020 19:128, 30 March 2020

Malaria control using long-lasting insecticidal nets (LLINs) and indoor residual spraying of insecticide (IRS) has been associated with reduced transmission throughout Africa. However, the impact of transmission reduction on the age distribution of malaria cases remains unclear.

Genetic differentiation and population structure of Anopheles funestus from Uganda and the southern African countries of Malawi, Mozambique, Zambia and Zimbabwe

February 24, 2020 - 13:58 -- Open Access
Author(s): 
Kaddumukasa MA, Wright J, Muleba M, Stevenson JC, Norris DE, Coetzee M
Reference: 
Parasit Vectors. 2020 Feb 18;13(1):87

Anopheles funestus (s.s.) is a primary vector of the malaria parasite Plasmodium falciparum in Africa, a human pathogen that causes almost half a million deaths each year. The population structure of An. funestus was examined in samples from Uganda and the southern African countries of Malawi, Mozambique, Zambia and Zimbabwe.

Recovery and stable persistence of chloroquine sensitivity in Plasmodium falciparum parasites after its discontinued use in Northern Uganda

February 22, 2020 - 16:49 -- Open Access
Author(s): 
Betty Balikagala, Miki Sakurai-Yatsushiro, Shin-Ichiro Tachibana, Mie Ikeda, Masato Yamauchi, Osbert T. Katuro, Edward H. Ntege, Makoto Sekihara, Naoyuki Fukuda, Nobuyuki Takahashi, Shouki Yatsushiro, Toshiyuki Mori, Makoto Hirai, Walter Opio, Paul S. Obwoya, Denis A. Anywar, Mary A. Auma, Nirianne M. Q. Palacpac, Takafumi Tsuboi, Emmanuel I. Odongo-Aginya, Eisaku Kimura, Martin Ogwang, Toshihiro Horii & Toshihiro Mita
Reference: 
Malaria Journal 2020 19:76, 18 February 2020

Usage of chloroquine was discontinued from the treatment of Plasmodium falciparum infection in almost all endemic regions because of global spread of resistant parasites. Since the first report in Malawi, numerous epidemiological studies have demonstrated that the discontinuance led to re‑emergence of chloroquine‑susceptible P. falciparum, suggesting a possible role in future malaria control. However, most studies were cross‑sectional, with few studies looking at the persistence of chloroquine recovery in long term. This study fills the gap by providing, for a period of at least 6 years, proof of persistent re‑emergence/stable recovery of susceptible parasite populations using both molecular and phenotypic methods.

NOT Open Access | Risk factors for Burkitt lymphoma in East African children and minors: A case-control study in malaria-endemic regions in Uganda, Tanzania and Kenya

February 22, 2020 - 16:29 -- NOT Open Access
Author(s): 
Peprah S, Ogwang MD, Kerchan P, Reynolds SJ, Tenge CN, Were PA, Kuremu RT, Wekesa WN, Sumba PO, Masalu N, Kawira E, Magatti J, Kinyera T, Otim I, Legason ID, Nabalende H, Dhudha H, Ally H, Genga IO, Mumia M, Ayers LW, Pfeiffer RM, Biggar RJ, Bhatia K, Goedert JJ, Mbulaiteye SM
Reference: 
Int J Cancer. 2020 Feb 15;146(4):953-969

Endemic Burkitt lymphoma (eBL) is the most common childhood cancer in sub‐Saharan African countries, however, few epidemiologic studies have been undertaken and none attempted enrolling cases from multiple countries. We therefore conducted a population‐based case–control study of eBL in children aged 0–15 years old in six regions in Northern Uganda, Northern Tanzania and Western Kenya, enrolling 862 suspected cases and 2,934 population controls (response rates 98.5–100%), and processing ~40,000 vials of samples using standardized protocols.

Healthcare professionals’ perspective can guide post-marketing surveillance of artemisinin-based combination therapy in Uganda

February 14, 2020 - 16:29 -- Open Access
Author(s): 
Helen Byomire Ndagije, Ronald Kiguba, Niko Speybroeck, et al.
Reference: 
Malaria Journal 2020 19:63, 10 February 2020

Efficient testing to identify poor quality artemisinin-based combination therapy (ACT) is important to optimize efforts to control and eliminate malaria. Healthcare professionals interact with both ACT and malaria patients they treat and hence could observe, first-hand, suspect poor quality artemisinin-based combinations linked to poor malaria treatment outcomes and the factors associated with inappropriate use or treatment failure.

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