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The clinical impact of artemisinin resistance in Southeast Asia and the potential for future spread.

Artemisinins are the most rapidly acting of currently available antimalarial drugs. Artesunate has become the treatment of choice for severe malaria, and artemisinin-based combination therapies (ACTs) are the foundation of modern falciparum malaria treatment globally. Their safety and tolerability profile is excellent. Unfortunately, Plasmodium falciparum infections with mutations in the 'K13' gene, with reduced ring-stage susceptibility to artemisinins, and slow parasite clearance in patients treated with ACTs, are now widespread in Southeast Asia. We review clinical efficacy data from the re…

Antimicrobial Usage and Antimicrobial Resistance in Animal Production in Southeast Asia: A Review.

Southeast Asia is an area of great economic dynamism. In recent years, it has experienced a rapid rise in the levels of animal product production and consumption. The region is considered to be a hotspot for infectious diseases and antimicrobial resistance (AMR). We reviewed English-language peer-reviewed publications related to antimicrobial usage (AMU) and AMR in animal production, as well as antimicrobial residues in meat and fish from 2000 to 2016, in the region. There is a paucity of data from most countries and for most bacterial pathogens. Most of the published work relates to non-typho…

Novel and emergent sandfly-borne phleboviruses in Asia Minor: a systematic review.

Sandfly-transmitted phleboviruses are globally spread agents causing febrile diseases and central nervous system infections. The activity of pathogenic phleboviruses, as well as several novel strains, has been reported from Turkey, a transboundary country connecting Asia, Europe, and Africa with suitable habitats for sandflies. This study overviews all published data on phleboviruses from Turkey and evaluates the impact from the virological, epidemiological, and public health perspectives. A systematic review of Web-based global and local resources was performed. Comparison and phylogenetic an…

Epidemiological status of kissing-bugs in South East Asia: A preliminary assessment.

Kissing-bugs (Triatominae) are being increasingly reported as a biting nuisance in SE Asia, with severe bite reactions sometimes leading to anaphylactic shock. In addition, they pose a risk for vector-borne transmission of trypanosomiasis, with potential diagnostic difficulties due to the range of trypanosome species in the region. Here, we review available information about Triatominae in Asia, and present additional comparisons using morphometry, cytogenetics, and new DNA sequence data, to clarify their relationship with each other and with the better known American species. We deduce that a…

Occurrence of and risk factors for Strongyloides stercoralis infection in South-East Asia.

The soil-transmitted nematode, Strongyloides stercoralis is one of the most-neglected of all neglected tropical diseases. It is globally distributed, favouring the humid, wet climates of the tropics and subtropics. Inadequate sanitary conditions promote the spread of S. stercoralis infection. In South-East Asia, many countries provide the ideal ecological and economic setting for high S. stercoralis infection rates. Yet, in most of these countries, little is known about the actual prevalence and distribution of S. stercoralis. One reason for this lack of knowledge pertains to the time- and res…

Fighting the good fight: the role of militaries in malaria elimination in Southeast Asia.

Despite significant progress in malaria control in the Greater Mekong Subregion (GMS), malaria is still endemic, with more than 30 million people infected annually. Important gaps remain in case management, service delivery, prevention, and vector control, particularly in hard-to-reach mobile populations. Rapidly evolving drug resistance has created a new urgency to move aggressively toward elimination. However, no clear and cost-effective strategy has been identified. Although GMS militaries are under-recognized as a malaria transmission reservoir, they are an important focal point for elimin

Ocular Pathology: Role of Emerging Viruses in the Asia-Pacific Region-A Review.

The role of viral infections in ocular pathology varies greatly, involving all the components of the eye. Some viruses like herpes simplex, herpes zoster, adenovirus, enterovirus 70, influenza virus, human immunodeficiency virus, and cytomegalovirus are well-known for their role in ocular pathology. In recent years, emerging and resurging viral infections represent an important public health problem. The Asia-Pacific region has witnessed a number of pandemic and epidemic outbreaks caused by these viruses during the last 2 decades. The number of ocular complications being reported in patients o…

HLA-B*5801: utility and cost-effectiveness in the Asia-Pacific Region.

Gout is a common condition which is mainly treated with the hypo-uricemic agent, allopurinol. Although allopurinol is generally a well-toler … ome and toxic epidermal necrolysis. The allele frequency of HLA-B*5801 is highest in the South East Asian population.Since other hypo-uricemic agents are available, patients may wish to have HLA-B*5801 testing before being started on allopurinol. As the test for HLA-B*5801 is expensive, time-consuming and only available in selected laboratories, there …

Epidemiology of hepatitis E in low- and middle-income countries of Asia and Africa.

Hepatitis E is an acute, viral hepatitis primarily transmitted through the fecal-oral route. The first major epidemic of hepatitis E virus (HEV) was reported in 1955 in Delhi, India. Since that time, numerous epidemics have been reported across the low- and middle-income countries in Asia and Africa. Even in the absence of large-scale outbreaks, hepatitis E is an important cause of clinical hepatitis. Serologic studies across Asia and Africa show a high prevalence of anti-HEV antibodies. Interest in hepatitis E has increased over the last two decades. However, there are many unanswered questio…

Low risk of Japanese encephalitis in short-term Australian travelers to Asia.

The risk of Japanese encephalitis (JE) in travelers is unknown. In this prospective study, we investigated the incidence of JE in 387 short-term Australian travelers visiting Asia over a 32-month period from August 2007 to February 2010 by performing pre- and post-travel antibody testing. No travelers were infected with JE virus during travel, indicating a low risk of infection for short-term travelers.

Population genetics of the malaria vector Anopheles aconitus in China and Southeast Asia.

Anopheles aconitus is a well-known vector of malaria and is broadly distributed in the Oriental Region, yet there is no information on its p … was observed with highly significant genetic variation present among population groups in Southeast Asia. The greatest genetic diversity exists in Yunnan and Myanmar population groups. All population groups are significantly different from one another in pairwise Fst values, except Northern Thailand with Central Thailand. Mismatch distributions and ext …

Actinomycetoma in SE Asia: the first case from Laos and a review of the literature.

BACKGROUND: Mycetoma is a chronic, localized, slowly progressing infection of the cutaneous and subcutaneous tissues caused either by fungi (eumycetoma or implantation mycosis) or by aerobic actinomycetes (actinomycetoma). It is acquired by traumatic implantation, most commonly in the tropics and subtropics, especially in rural agricultural communities. Although well recognized elsewhere in Asia, it has not been reported from the Lao People's Democratic Republic (Laos). CASE PRESENTATION: A 30 year-old female elementary school teacher and rice farmer from northeast Laos was admitted to Mahoso…

Emergence of genotype I of Japanese encephalitis virus as the dominant genotype in Asia.

Japanese encephalitis virus (JEV), a mosquito-borne zoonotic pathogen, is one of the major causes of viral encephalitis worldwide. Previous phylogenetic studies based on the envelope protein indicated that there are four genotypes, and surveillance data suggest that genotype I is gradually replacing genotype III as the dominant strain. Here we report an evolutionary analysis based on 98 full-length genome sequences of JEV, including 67 new samples isolated from humans, pigs, mosquitoes, midges. and bats in affected areas. To investigate the relationships between the genotypes and the significa

Our wormy world genomics, proteomics and transcriptomics in East and southeast Asia.

Helminths are the cause of some of the major infectious diseases of humanity in what is still a "wormy" world. There is, in East and Southeast Asia, a high prevalence of several helminthiases which occur primarily in rural, impoverished areas of low-income and developing countries throughout the tropics and subtropics. Subsequent to various parasite genome projects that commenced in the early 1990s, under the aegis of the World Health Organization (WHO), the draft genomes of three major helminth species (Schistosoma japonicum, S. mansoni and Brugia malayi) have been sequenced, and many other h…

Rise and fall of political complexity in island South-East Asia and the Pacific.

There is disagreement about whether human political evolution has proceeded through a sequence of incremental increases in complexity, or whether larger, non-sequential increases have occurred. The extent to which societies have decreased in complexity is also unclear. These debates have continued largely in the absence of rigorous, quantitative tests. We evaluated six competing models of political evolution in Austronesian-speaking societies using phylogenetic methods. Here we show that in the best-fitting model political complexity rises and falls in a sequence of small steps. This is closel

Prevention of unsafe abortion in countries of Central Eastern Europe and Central Asia.

Despite permissive laws and a well-developed network of facilities, the incidence of unsafe abortion and the resulting maternal mortality is unacceptably high in Central and Eastern Europe and Central Asia, with one-quarter of all maternal deaths reported to occur as a consequence of abortion. Among the reasons that oblige women to submit themselves to risky procedures are new legislative barriers to accessing pregnancy termination, the unequal distribution of abortion services and healthcare providers, the increased costs of abortion services or unofficial payments, coupled with an increase i…

Innovations in chemotherapy and radiation therapy: Implications and opportunities for the Asia-Pacific Rim.

New cases of invasive cancer in the United States occur among nearly 1.5 million people annually. In 2007, more than 1,500 people died per day with this diagnosis. Cancer is responsible for nearly one in every four deaths reported in the country. Enormous amounts of money and research have been, and are being spent, in an attempt to improve these numbers. While prevention and early detection remain the key to long-term success, treatment in the neo-adjuvant, adjuvant and metastatic settings still centre around two main treatment modalities - radiation therapy and chemotherapy. This article wil

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… This is further complicated by a rising life expectancy and an aging population in Asia. Previously, the cancer-specific death rate was lower in developing countries such as those in Asia, predominantly due to infectious diseases. … This survey-based report of 17 countries in South Asia, Southeast Asia, East Asia and Australia revealed large differences in equipment and personnel. For effective use of radiotherapy, there must be a planned education programme for the general public and for referring doctors. …

Are there any real Helicobacter pylori infection-negative gastric cancers in Asia?

The great variability in gastric cancer rates across Asia, with very high incidences in Japan and Korea, and exceedingly low incidences in ethnic Malays, whether in Malaysia or Indonesia, appears largely due to variation in Helicobacter pylori infection rates. While between 2% and 10.6% of gastric cancers in a recent Japanese survey were considered to be negative for bacterial infection on the basis of seropositivity and H. pylori-dependent mucosal atrophy, it is notoriously difficult to preclude past infection. The situation is greatly complicated by reported differences in the etiology of ga…