Tomas Jelinek

..Additional testing for Pfmdr Y76 provides increased specificity to this approach...

..Thirteen cases of falciparum malaria acquired by Europeans in the Dominican Republic occurred from June 1999 to February 2000. The cases were identified by the European Network on Imported Infectious Disease Surveillance (TropNetEurop)...

..Treatment of falciparum malaria without resistance testing appears to be effective in most cases, but possible therapeutic failure due to emerging drug resistance should be kept in mind...

..However, decreased values of sensitivity and specificity, in comparison with expert microscopy, still impose a clear limit on the usefulness of the currently available kits...

..Compared with European standards, the mortality rate was low (0.6% in Europeans). Data from TropNetEurop member sites can contribute to our understanding of the epidemiological and clinical findings regarding imported falciparum malaria...

..The outbreak was detected through TropNetEurop, a sentinel surveillance network of clinical sites throughout Europe...

..Dengue hemorrhagic fever occurred in 7 patients (2.4%) all of whom recovered. Data reported by member sites of the TropNetEurop can contribute to understanding the epidemiology and clinical characteristics of imported DF...

..The screening results were used to map the prevalence of mutations and, thus, levels of potential drug resistance in endemic areas world-wide...

..Thus, it is important to consider interference by rheumatoid factor when using immunochromatographic assays for the detection of specific IgM produced during dengue infection...

..Thus, travelers serve an important double role as potential victims of the disease and as vehicles for further spread of dengue...

..5% and a specificity of 99.4%. Dipstick tests have the potential of enhancing speed and accuracy of the diagnosis of P. falciparum malaria, especially if nonspecialized laboratories are involved...

..These results indicate that the test in its current form lacks sufficient sensitivity to be recommended as a screening tool, but it might be useful for indicating further diagnostic procedures in a clinical setting...

..0041) associated with decreased resistance to antimalarials. Use of this method in a field study on in vivo drug resistance demonstrates another potential application of genotyping as a tool for epidemiological investigations...

..For apparently the same reason, it was not possible to show a statistical association between S/P resistance and the presence of particular polymorphisms in the DHFR and DHPS genes before treatment...

..00, CI). The study provides evidence for the existence of antimalarial drug resistance in the south of Lao PDR, and offers a molecular method to predict resistance...

..Gene mutations occurred in both the DHFR and DHPS gene of the Colombian isolates, suggesting that resistance to antifolate drugs exists or may develop soon in Colombia...

..Testing for prevalence of point mutations conferring antifolate resistance might help to identify the developing of drug resistance at a very early stage...

..Resistance of Plasmodium falciparum to atovaquone in vitro and in vivo has been associated to mutations in the parasite cytochrome b gene...

..Blood levels of mefloquine at that stage were at 1400 ng/ml, thus largely excluding non-compliance and malabsorption. To our knowledge, this is the first case of confirmed prophylaxis failure due to mefloquine resistance in East Africa...

..The aim of this study was to assess the distribution of the two EBA-175-alleles in the Lao PDR...

..The results of this treatment study suggest that such a possibility is unlikely...

..34 clones (P < 0.001). In addition, clear differences between endemic regions were apparent in three of the investigated allelic groups: RO33 of the MSP1 gene and FC and Indochina of the MSP2 gene...

..falciparum. It may also be useful for the determination of the efficacy of malaria chemoprophylaxis for inhibiting outbreak of disease...

..Self-use of dipstick tests for malaria diagnosis by travelers should only be recommended after appropriate instruction and training, including a successful performance of the test procedure...

..Furthermore, HCV reinfection (genotype 2b) was successfully treated with interferone alpha 2b and ribavirine for 6 months...

..Dengue fever seems to be widespread in this area, but clinical dengue diagnosis remains difficult, especially in the first days of illness when physicians have to discriminate between dengue and other febrile illnesses...

..The group recommended non-selective prescribing of chemoprophylaxis for visitors to India, Pakistan, Bangladesh and Sri Lanka should be dropped...

..Lack of sequestration with excessive hyperparasitemia leading to systemic hypoxemia and host cytokine release may have contributed to the rapid fatal course in these nonimmune patients...

..However, a significant correlation between parasite density, selected MSP2 loci and differences between parasite density in monoclonal vs. multiclonal infections occurred. Multiplicity of infection was age-dependent...

..However, the likelihood of the presence of helminth infections increases considerably with the extent of eosinophilia...

..Physical examination showed extensive pain on palpation of the glenohumeral and acromioclavicular joints with impairment of active and passive mobility. Investigation of the cervical spine was normal...

..All 310 control samples tested negative. These data demonstrate a considerable risk of malaria transmission for short-term travelers to East Africa...

..Taking this into consideration, it should be possible to decrease the number of travelers returning with tick typhus significantly by adequate pretravel counseling...

..Short-time visitors to other parts of Asia and Latin America are apparently at a markedly lower risk. Risk factors such as type, duration and destination of the journey should be considered in pretravel counseling...

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..We conclude that JEV should remain restricted to travellers with an increased risk of acquiring JE...

..All resistant isolates had at least three mutations. The high prevalence of mutation associated with antifolate resistance may point toward low drug efficacy in the future...

..falciparum isolates imported by travellers...

..To improve the travelers' health, attention needs to be paid to individual risk factors, the prevention and therapy of travelers' diarrhea, malaria prophylaxis, management of respiratory illness, and personal safety...

..If there is a correlation between AQR and the SVMNT-haplotype as suggested, 31% prevalence of a potential resistance marker is cause for concern...

..The results of these studies may be translated into chemoprophylactic strategies for travelers...

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..Since a safe product will be available very soon, guidelines and recommendations will have to be reconsidered...

..Data on severity and secondary infection rates in a population of travelers are lacking...

..A further cluster of 12 was reported in August, 2002. Several immigrants traveled by air, making the risk of introducing sudden acute respiratory syndrome a possibility should such illegal immigrations continue...

..The objective of this study was to assess the prevalence of this mutation in African isolates of Plasmodium falciparum that have been imported into Europe through travellers...

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..Possible associations of the dimorphism with severe malaria have been analysed in a case-control study in northern Ghana...

..The findings suggest that the presence of Ile 51/Asn 108 dhfr mutations and Ala 436 dhps confers decreased susceptibility of P. falciparum to PYR/SDX in areas of low endemicity...

..These findings illustrate the spread of atovaquone-proguanil-resistance in Africa and question the usefulness of codon 268 as the only target for the surveillance of its emergence...

..However, little is known about the prevalence of codon-268 mutations and their quantitative association with treatment failure...

..Linkage of existing networks, which avoids duplication of work and fully exploits the information potential of all combined systems, should be targeted...

..The risk of adverse events are high and the benefit of avoided benign vivax malaria is very low under current policy, which may be causing more harm than benefit...

..Only when certain alarm symptoms are present are further measures such as the search for pathogens or chemotherapy indicated...

..Vaccination against cholera and ETEC should be recommended for at-risk travelers, in particular those with high exposure at their travel destination or high personal risks through fluid loss...

..Giardia lamblia causes infection of the small intestine, which leads to malabsorption and chronic diarrhoea...

..The lack of a correlation between symptoms and detected infectious disease indicates the need for a standardized routine screening examination in all migrants...

..Serotype-specific dengue antibodies indicated acute infections in 51 (4.7%) travelers with recent fever and 13 (1.1%) travelers with no recent fever, depending largely on destination and epidemic activity in the countries visited...

..In practice, however, often only one blood sample is available from febrile travellers returning from dengue endemic areas...