Archive for June, 2010
Exposure to antibiotics at home and in the broader environment influences the risk of children carrying antibiotic-resistant Escherichia coli bacteria, according to a study published in the The American Journal of Tropical Medicine and Hygiene.
The study was based in four areas of Peru with poor health systems, where antibiotics are used indiscriminately and without prescription. It covered coastal, mountain and jungle environments and focused on children between the ages of three months and three years.
The study suggests that environmental exposure to antibiotic-resistant E. coli can be as important as the consumption of antibiotics, according to the paper’s principal author, Henry Kalter, from the School of Public Health at Johns Hopkins University.
A risk factor at home was the use of antibiotics by other family members. The study demonstrated that children who hadn’t taken particular antibiotics themselves still carried bacteria resistant to them.
At the community level, living in a place where many families raised chickens themselves was a protective factor against the transport of antibiotic-resistant bacteria. According to Kalter, high consumption of home-raised chickens probably protects a community against exposure to antibiotics. He contrasted home-raised chickens with market-bought chickens, which may be given high doses of antibiotics and therefore have high levels of antibiotic-resistant E. coli.
“An important aspect of our conclusions is that the protective effect was not due to the fact that the children were eating certain types of chicken; rather that their communities were,” he said.
Kalter suggested that communities consuming more chickens raised at home presumably had less resistant bacteria in the environment, such as in open sewers and uncovered wells.
“This study reinforces the message that exposure to antibiotics leads to the development of antibiotic resistance, by studying the role of different types of exposure on small children carrying of antibiotic-resistant E. coli,” he continued.
According to Kalter, examining these factors provides a better understanding of how antibiotic resistance spreads in the developing world.
“These findings suggest that unnecessary use of antibiotics in humans and animals should be minimised as much as possible,” he added.
“Many tons of the antibiotics consumed each year on the planet are given to stock animals. This study demonstrates that this use has a very real cost to human health,” Edward T. Ryan, president of the American Society of Tropical Medicine and Hygiene, said in a press release from Johns Hopkins University.
This is my translation of a story written by Zoraida Portillo on the Science and Development Network, “Antibióticos propician resistencia infantil a E. coli”, published on June 14, 2010. You can read the original in Spanish here.
SciDev.Net stories are published under a Creative Commons attribution license; my translation is available under the same license. Note this license is only for this page. Other works on this website are subject to other licenses; please contact me for details if you’d like to republish other parts of this site.
An internet portal called “YoAgricultor”, driven by the Chilean Ministry of Agriculture, will allow small to medium-size country farmers to join virtual communities where they can access strategic farming information.
Four virtual communities have been launched on the portal this week (June 2nd), for producers of maize, honey, wine and berries. The initiative is a pilot project financed by the Foundation for Agrarian Innovation (FIA) and the Inter-American Development Bank, which could reach an estimated 2000 farmers.
In each virtual community farmers can find free information about plant health, productivity, agricultural techniques and weather and market alerts, among other things. There are also forums in which farmers can communicate with each other.
The portal’s contents have been developed in conjunction with farmers and organised following stages of production. Agronomists and members of agricultural organisations developed the contents including short videos, podcasts, text and photographs.
“This project is purely knowledge management: we’re taking the knowledge of producers and putting it into a system in which they can participate and enhance their activity,” Alain Hermosilla, the coordinator of YoAgricultor, said.
“A site like this hasn’t existed in Latin America until now, but it’s completely replicable and exportable, plus it’s developed with free software,” he added.
The portal also includes a service called DatAgro that allows maize farmers to receive a text message with guidance on market prices, weather alerts and crop improvement data. This mobile service will soon be introduced for berry farmers, beekeepers, winemakers and organisations for stock breeders in the south of Chile, according to John Zoltner, head of Zoltner Consulting Group, the Chilean company running the service.
In the near future, strategic information delivered via mobile phones might extend to other Latin American countries, where Zoltner said they are already talking with farmers of potato, coffee and other agricultural products.
This technology, he added, “will also be implemented in a pilot project with the Ministry of Health in Peru and the Pan American Health Organization, to build the capacity of health professionals and community workers who care for pregnant women and small children, with the objective of reducing rates of infant mortality in the Peruvian highlands”.
This is my translation of a story written by Paula Leighton on the Science and Development Network, “Internet y celulares mejoran gestión agrícola en Chile”, published on June 4 2010. You can read the original in Spanish here.
SciDev.Net stories are published under a Creative Commons attribution license; this translation is available under the same license. Note this license is only for this page. Other works on this website are subject to other licenses; please contact me for details if you’d like to republish other parts of this site.
I grew up in the southern state of a country in the Southern Hemisphere, South Australia. No geography confusion there. At the moment I’m living in the northernmost region of another country in the same hemisphere, which means I’m living in the north, even though for most of the world with internet access it’s still the south. However from my perspective, and that of Chileans, Arica is a northern extremity. It’s also extreme thanks to its exceptionally dry climate, which trumps that of my home town, Adelaide, which is also noted for aridity.
Arica is also an interesting place to be right now because Chile’s president, Sebastián Piñera, popped up this week for a celebration. The occasion was the day during the War of the Pacific (not to be confused with the Pacific War), when Chile took this region from Peru. Or more specifically, a big rock by the beach in Arica.
You might ask what I’m doing here, besides brushing up on South American history and international relations and taking South American Spanish classes. Despite reaching intermediate level in Spain, I needed classes because the language on this continent is different. So much so that I’m reading a book called “How to survive in the Chilean jungle,” which is not a guide to a jungle at all (I’m on the edge of the Atacama Desert), but rather the vocabulary unique to this skinny but vast nation.
As well as polishing my thesis I’ve been editing on a series of videos. They’re for one of the research institutes based at the University of Adelaide I’ve worked with before, the Australian Centre for Plant Functional Genomics. You can see one here. I filmed the content before I left the country. I have my camera with me, so you can expect content from South America down the track.