Global Malaria News
A new study shows that graphene sheets can block the signals mosquitoes use to identify a blood meal, potentially enabling a new chemical-free approach to mosquito bite prevention.
Targeting the mosquito population within a defined area is the primary way scientists and public health officials mitigate the spread of diseases caused by viruses like Zika, dengue fever, and West Nile. But researchers have discovered that evaluating how humans commute to and from an affected area, as well as their living habits, is key for successful mitigation planning.
Over the last 40 years, the Asian tiger mosquito, Aedes albopictus, has invaded every continent thanks to the transportation of its eggs via human trade and transportation. Researchers have now used the genomes of the mosquitoes to track the history of the invasion and expansion of the species through Albania, Italy, and Greece.
In the first continent-wide genomic study of malaria parasites in Africa, scientists have uncovered the genetic features of Plasmodium falciparum parasites that inhabit different regions of the continent, including the genetic factors that confer resistance to anti-malarial drugs. This sheds new light on the way that drug resistance is emerging in different locations and moving by various routes across Africa, putting previous success in controlling malaria at risk.
The first detailed map of individual malaria parasite behavior across each stage of its complicated life cycle has been created by scientists. Researchers used advanced single-cell technology to isolate individual parasites and measure their gene activity. The result is the Malaria Cell Atlas, which gives the highest resolution view of malaria parasite gene expression to date and monitors how individual parasites change as they develop in both the mosquito and human host.
By sequencing virus genomes from infected travelers, analyzing travel patterns and mosquito modeling, researchers unearthed a spike in Zika cases from travelers returning from Cuba during the summer of 2017 that was not captured by local reports.
The US each year sees more than 1,500 cases of malaria, and currently there is limited access to an intravenously-administered (IV) drug needed for the more serious cases.
A breakthrough in monkey malaria research could help scientists diagnose and treat a relapsing form of human malaria.
Mosquitoes can harbor thousands of malaria-causing parasites in their bodies, yet while slurping blood from a victim, they transmit just a tiny fraction of them. In an effort to define precisely the location of the parasite bottleneck, scientists say they have discovered that the parasites are stopped by a roadblock along the escape route in the insect's spit glands, a barrier that could potentially serve as a novel target for preventing or reducing malarial infection.
Chemists develop selective agents to combat infectious diseases -- based on the structures of natural products.
Infections such as Chagas disease, African sleeping sickness, and leishmaniasis are caused by a group of microorganisms called kinetoplastids. In a new study, a research team used a non-disease-causing kinetoplastid to investigate how these parasites adhere to their insect hosts' insides. Their findings could help in the development of targeted therapies that prevent insects from transmitting these diseases to humans.
Researchers have used whole genome sequencing to understand copy-number variants (CNVs) in malaria mosquitoes and their role in insecticide resistance.
The US Centers for Disease Control and Prevention (CDC) recently developed an Autocidal Gravid Ovitrap (AGP trap) that attracts and captures female mosquitoes looking for a site to lay eggs. Now, researchers report that AGO traps successfully protected people from infection with chikungunya virus (CHIKV) in communities in Puerto Rico.
Genomic surveillance has revealed that malaria resistance to two first-line antimalarial drugs has spread rapidly from Cambodia to neighboring countries in Southeast Asia. Researchers discovered that descendants of one multi-drug resistant malaria strain are replacing the local parasites in Vietnam, Laos and northeastern Thailand, and are picking up additional new genetic changes which could further enhance resistance. The study reveals the importance of ongoing genomic surveillance in malaria control strategies.
Researchers have taken significant steps in understanding the way that the anti-malarial drug primaquine (PQ) works, which they hope will lead to the development of new, safer and more effective treatments for malaria.
New research suggests that a better understanding of human behavior at night -- when malaria mosquitoes are biting -- could be key to preventing lingering cases.
A new study describes the way mosquito immune systems fight malaria parasites using various waves of resistance. The study could lay the groundwork for future research to combat the transmission of malaria, which sickens millions of people across the globe every year.
Most of the 3,000+ mosquito species are opportunistic, but researchers are most interested in the mosquitoes that scientists call 'disease vectors' -- carriers of diseases that plague humans -- some of which have evolved to bite humans almost exclusively. One expert is trying to understand how the brain and genome of these mosquitoes have evolved to make them specialize in humans -- including how they can distinguish us from other mammals so effectively.
Researchers have found a new toxin that selectively targets mosquitoes. This can lead to innovative and environmentally friendly approaches to reduce malaria.
Researchers have identified more than 100 'hijacked' human genes that malaria parasites commandeer to take up residence inside their victim's liver during the silent early stages of infection, before symptoms appear. Before their work only a few such genes were known. The findings could lead to new ways to stop malaria parasites before people get sick and help keep the disease from spreading, via treatments that are less likely to promote resistance.