نتایج جستجو برای: intestinal protozoa
تعداد نتایج: 140424 فیلتر نتایج به سال:
Protozoan predation, diversifying selection, and the evolution of antigenic diversity in Salmonella.
Extensive population-level genetic variability at the Salmonella rfb locus, which encodes enzymes responsible for synthesis of the O-antigen polysaccharide, is thought to have arisen through frequency-dependent selection (FDS) by means of exposure of this pathogen to host immune systems. The FDS hypothesis works well for pathogens such as Haemophilus influenzae and Neisseria meningitis, which a...
BACKGROUND AND AIM OF THE WORK Intestinal parasitosis represent a relevant clinical problem, especially in developing countries, where they are responsible for morbidity and mortality in adults and children and many epidemiological data are available for these areas. The actual situation of intestinal parasitosis in Europe is not yet well investigated since they are usually not notified. We des...
Infection caused by intestinal parasites is still a common health problem in a poor-hygiene population especially for children in developing countries. A cross-sectional study was conducted among 781 Karen students (age: 3 to 19, males: 325, females: 456) to determine the current status of intestinal parasitic infections in a mountainous area in the North of Thailand. The study was drawn from t...
INTRODUCTION among the intestinal parasites, the helminthiasis occupies a prominent position in Brazil, since it worsens malnutrition and the gives rise to neurovegetative disorders. Helminths like Ascaris lumbricoides, Enterobius vermicularis, hookworm, Trichuris trichiura and Strongyloides stercoralis stand out due to several factors that modulate the immune response of individuals. Among the...
BACKGROUND Handheld light microscopy using compact optics and mobile phones may improve the quality of health care in resource-constrained settings by enabling access to prompt and accurate diagnosis. METHODOLOGY Laboratory technicians were trained to operate two handheld diagnostic devices (Newton Nm1 microscope and a clip-on version of the mobile phone-based CellScope). The accuracy of thes...
BACKGROUND Intestinal protozoan infections are confirmed as major causes of diarrhea, particularly in children, and represent a significant, but often neglected, threat to public health. No recent data were available in Lebanon concerning the molecular epidemiology of protozoan infections in children, a vulnerable population at high risk of infection. METHODOLOGY AND PRINCIPAL FINDINGS In ord...
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