Sep 19, 2021 · Within the intestinal tract, three organisms—the ameba, Entamoeba histolytica; the flagellate, Giardia lamblia; and the sporozoan, Cryptosporidium hominis—are the most important. In the urogenital tract, the flagellate Trichomonas vaginalis is the important pathogen.
Sep 20, 2021 · Standard diagnostics for Mycobacterium tuberculosis (MTB) including acid-fast bacilli (AFB) smear and culture, and Xpert™ MTB/RIF real-time Polymerase Chain Reaction (RT-PCR; Xpert) have variable sensitivity and/or long turnaround times. We describe the clinical performance of a laboratory-developed tissue-based MTB PCR compared with AFB culture and Xpert using a composite reference standard ...
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Sep 20, 2021 · We report a case of human ocular onchocerciasis by zoonotic Onchocerca lupi presenting as nodular scleritis. Molecular analyses were used to confirm diagnosis at species level. In addition to few existing reports of human infection by O. lupi in Turkey, this case further suggests that the pathogen might be more common than previously reported, thus requiring further attention and investigations.
Sep 20, 2021 · To better understand the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variant lineage distribution in a college campus population, we carried out viral genome surveillance over a 7-week period from January to March 2021. Among the sequences were three novel viral variants: BV-1 with a B.1.1.7/20I genetic background and an additional spike mutation Q493R, associated with a mild ...
4 days ago · The gastrointestinal parasite Entamoeba histolytica secretes serotonin, causing a sustained secretory diarrhea in some people.   Patients infected with E. histolytica have been found to have highly elevated serum serotonin levels, which returned to normal following resolution of the infection. 
Sep 20, 2021 · Formative research was conducted in a rural hill setting in Nepal during April–June 2012 to inform the design of an intervention to promote safe food hygiene practices. A variety of methods underpinned by Behavior Centered Design theory and Hazard Analysis Critical Control Points was used to pinpoint key risk behaviors and their environmental and psychological determinants in 68 households ...