Focus turns to spurring vaccine use and development

EAST LANSING, Mich. — Bacteria infections – most of which are preventable via vaccines readily available in the developed world – and not malaria are the leading cause of death for children in sub-Saharan Africa.

Stephen Obaro is a professor in MSU's Department of Pediatrics and Human Development studying bacteria diseases in Africa

A new Michigan State University project based in Nigeria and funded by a $5.8 million grant aims to help prevent these diseases by collecting local data on the ailments, spurring vaccine use and development. Funded by the Bill & Melinda Gates Foundation, the research led by Stephen Obaro focuses on diseases such as pneumonia, sepsis and meningitis.

Availability and use of sanitation reduces by half the likelihood of parasitic worm infections

Access to sanitation facilities, such as latrines, reduces by half the risk of becoming infected by parasitic worms that are transmitted via soil (soil-transmitted helminths) according to a study published in this week’s PLoS Medicine.

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Forgotten People, Forgotten Diseases: The Neglected Tropical Diseases and Their Impact on Global Health and Development :: Amazon Some of the worst tropical diseases in the world have too long been ignored. Parasitic and bacterial diseases such as hookworm, snail fever,

The parasite that causes malaria is a genetic outlier, which has prevented scientists from discovering the functions of most of its genes. Researchers at National Jewish Health and Yale University School of Medicine have devised a technique to overcome the genetic oddity of Plasmodium falciparum, the major cause of human malaria.

Background:
The operational impact of insecticide resistance on the effectiveness of long-lasting insecticide nets (LLINs) and indoor residual spraying (IRS) is poorly understood. One factor which may prolong the effectiveness of these tools in the field is the increase in insecticide susceptibility with mosquito age. In this study, LLINs and IRS were tested against young (three to five days) and old (17-19 days) pyrethroid resistant Anopheles gambiae s.l. from Burkina Faso.

by Vinicio T. S. Coelho, Jamil S. Oliveira, Diogo G. Valadares, Miguel A. Chávez-Fumagalli, Mariana C. Duarte, Paula S. Lage, Manuel Soto, Marcelo M. Santoro, Carlos A. P. Tavares, Ana Paula Fernandes, Eduardo A. F. Coelho

Background

The present study aims to identify antigens in protein extracts of promastigote and amastigote-like Leishmania (Leishmania) chagasi syn. L. (L.) infantum recognized by antibodies present in the sera of dogs with asymptomatic and symptomatic visceral leishmaniasis (VL).

by Katherine Gass, Madsen V. E. Beau de Rochars, Daniel Boakye, Mark Bradley, Peter U. Fischer, John Gyapong, Makoto Itoh, Nese Ituaso-Conway, Hayley Joseph, Dominique Kyelem, Sandra J. Laney, Anne-Marie Legrand, Tilaka S. Liyanage, Wayne Melrose, Khalfan Mohammed, Nils Pilotte, Eric A. Ottesen, Catherine Plichart, Kapa Ramaiah, Ramakrishna U. Rao, Jeffrey Talbot, Gary J. Weil, Steven A. Williams, Kimberly Y. Won, Patrick Lammie

Successful mass drug administration (MDA) campaigns have brought several countries near the point of Lymphatic Filariasis (LF) elimination. A diagnostic tool is needed to determine when the prevalence levels have decreased to a point that MDA campaigns can be discontinued without the threat of recrudescence. A six-country study was conducted assessing the performance of seven diagnostic tests, including tests for microfilariae (blood smear, PCR), parasite antigen (ICT, Og4C3) and antifilarial antibody (Bm14, PanLF, Urine SXP).

Summary:

Infectious disease surveillance for mass gatherings (MGs) can be directed locally and globally; however, epidemic intelligence from these two levels is not well integrated. Modelling activities related to MGs have historically focused on crowd behaviours around MG focal points and their relation to the safety of attendees. The integration of developments in internet-based global infectious disease surveillance, transportation modelling of populations travelling to and from MGs, mobile phone technology for surveillance during MGs, metapopulation epidemic modelling, and crowd behaviour modelling is important for progress in MG health.
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by Priti P. Parikh, Todd A. Minning, Vinh Nguyen, Sarasi Lalithsena, Amir H. Asiaee, Satya S. Sahoo, Prashant Doshi, Rick Tarleton, Amit P. Sheth

Background

Research on the biology of parasites requires a sophisticated and integrated computational platform to query and analyze large volumes of data, representing both unpublished (internal) and public (external) data sources. Effective analysis of an integrated data resource using knowledge discovery tools would significantly aid biologists in conducting their research, for example, through identifying various intervention targets in parasites and in deciding the future direction of ongoing as well as planned projects

by Alain Mpanya, David Hendrickx, Mimy Vuna, Albert Kanyinda, Crispin Lumbala, Valéry Tshilombo, Patrick Mitashi, Oscar Luboya, Victor Kande, Marleen Boelaert, Pierre Lefèvre, Pascal Lutumba

Background

Control of human African trypanosomiasis (sleeping sickness) in the Democratic Republic of Congo is based on mass population active screening by mobile teams. Although generally considered a successful strategy, the community participation rates in these screening activities and ensuing treatment remain low in the Kasai-Oriental province. A better understanding of the reasons behind this observation is necessary to improve regional control activities.

Background:
HIV-associated general immune activation is a strong predictor for HIV disease progression, suggesting that chronic immune activation may drive HIV pathogenesis. Consequently, immunomodulating agents may decelerate HIV disease progression.