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New morphological and molecular data were generated for trematodes recovered from the intestines of the fish Pseudaspius hakonensis from two locations in the south of the Russian Far East. Morphologically, these trematodes are identical to Pseudozoogonoides ugui (Microphalloidea: Zoogonidae) from Japan. According to results of phylogenetic analysis based on 28S rDNA sequence data, P. ugui was closely related to Zoogonoides viviparus, and P. subaequiporus appears as a sister taxon to these two species. Genetic distance values, calculated based on both 28S rDNA and ITS2 rDNA, between P. ugui and Z. viviparus represents an interspecific differentiation level. Our results have an ambiguous explanation, indicating that the implication of the presence of one or two compact vitellarial aggregations for the differentiation of Zoogonoides and Pseudozoogonoides should be reconsidered or that our results open up the question of the taxonomical status of trematodes previously denoted as Z. viviparus and P. subaequiporus.
As part of a parasitological survey, several specimens of two new monopisthocotylean species, Neotetraonchus celsomanueli sp. nov. and N.peruvianus sp. nov. (Dactylogyridea, Dactylogyridae), were collected from the gill filaments of the Peruvian sea catfish Galeichthys peruvianus (Siluriformes, Ariidae) off Puerto Pizarro, Tumbes region, Peru. Neotetraonchus celsomanueli sp. nov. is characterised by an MCO with a T-shaped distal end and an accessory piece that is ribbed and expanded proximally with a worm-shaped termination. Neotetraonchus peruvianus sp. nov. is typified by its MCO, which has a sledgehammer-shaped distal end and an accessory piece with a claw-shaped distal end. Additionally, N.peruvianus sp. nov. is characterised by its jellyfish-shaped onchium. A partial 28S rDNA sequence was obtained from N.celsomanueli sp. nov., and a phylogenetic analysis was conducted. This analysis revealed the phylogenetic position of Neotetraonchus celsomanueli sp. nov. within a clade comprising monopisthocotylean parasites of diadromous and marine ariid catfishes, including Hamatopeduncularia spp., Chauhanellus spp., Thysanotohaptor Kritsky, Shameem, Kumari & Krishnaveni, 2012, and Neocalceostomoides spinivaginalis Lim, 1995. This finding brings the number of known Neotetraonchus species to seven and represents the first described Neotetraonchus species infecting marine catfishes from Peru.
This study aimed to investigate the diverse clinical manifestations and simple early biomarkers predicting mortality of COVID-19 patients admitted to the emergency department (ED). A total of 710 patients with COVID-19 were enrolled from 6,896 patients presenting to the ED between January 2022 and March 2022. During the study period, a total of 478 patients tested positive for COVID-19, among whom 222 (46.4%) presented with extrapulmonary manifestations of COVID-19; 49 (10.3%) patients displayed gastrointestinal manifestations, followed by neurological (n = 41; 8.6%) and cardiac manifestations (n = 31; 6.5%). In total, 54 (11.3%) patients died. A Cox proportional hazards model revealed that old age, acute kidney injury at presentation, increased total leukocyte counts, low platelet counts, decreased albumin levels, and increased LDH levels were the independent predictors of mortality. The albumin levels exhibited the highest area under the curve in receiver operating characteristic analysis, with a value of 0.860 (95% confidence interval, 0.796–0.875). The study showed the diverse clinical presentations and simple-to-measure prognostic markers in COVID-19 patients presenting to the ED. Serum albumin levels can serve as a novel and simple early biomarker to identify COVID-19 patients at high risk of death.
This chapter details the epidemiology, route of spread, prevalence, incubation period and at-risk groups relating to viral gastroenteritis (rotaviruses, noroviruses, caliciviruses, adenoviruses, sapoviruses, astroviruses). It gives information on symptoms, laboratory diagnosis, treatment, prophylaxis and infection control.
This chapter details the epidemiology, route of spread, prevalence, incubation period and at-risk groups relating to Prion disease (CJD, vCJD). It gives information on symptoms, laboratory diagnosis, treatment, prophylaxis and infection control.
This chapter details the epidemiology, route of spread, prevalence, incubation period and at-risk groups relating to rotaviruses. It gives information on symptoms, laboratory diagnosis, treatment, prophylaxis and infection control.
This chapter details the epidemiology, route of spread, prevalence, incubation period and at-risk groups relating to human coronaviruses (SARS-CoV, MERS-CoV and SARS-CoV-2. It gives information on symptoms, laboratory diagnosis, treatment, prophylaxis and infection control.
This chapter details the epidemiology, route of spread, prevalence, incubation period and at-risk groups relating to Toxoplasma gondii. It gives information on symptoms, laboratory diagnosis, treatment, prophylaxis and infection control.
This chapter details the epidemiology, route of spread, prevalence, incubation period and at-risk groups relating to HIV. It gives information on symptoms, laboratory diagnosis, treatment, prophylaxis and infection control.
This chapter provides guidance on how to send specimens to a virology laboratory, including the need to provide full and accurate patient information, relevant clinical information, how to package and transport specimens and the need to send the correct specimens.
This chapter details the epidemiology, route of spread, prevalence, incubation period and at-risk groups relating to rabies virus. It gives information on symptoms, laboratory diagnosis, treatment, prophylaxis and infection control.
This chapter details the epidemiology, route of spread, prevalence, incubation period and at-risk groups relating to HSV. It gives information on symptoms, laboratory diagnosis, treatment, prophylaxis and infection control.
This chapter details the non-molecular techniques (virus culture, electron microscopy, detection of viral antigens and point-of-care tests) used to detect viruses in patient secretions or tissue which can provide direct evidence of current or ongoing infection.
This chapter details the epidemiology, route of spread, prevalence, incubation period and at-risk groups relating to human CMV. It gives information on symptoms, laboratory diagnosis, treatment, prophylaxis and infection control.
This chapter provides details of the viruses and other organisms that are more severe in immunocompromised patients (HIV, CMV, EBV, HSV, VZV, HHV6, HHV7, HHV8, adenoviruses, influenzaviruses, parainfluenzaviruses, RSV, SARS-CoV-2, HBV, HEV, polyomaviruses, papillomaviruses, parvovirus, T gondii). It gives details of symptoms, diagnosis, treatment and strategies for reducing the risk of severe symptoms.
This chapter details the epidemiology, route of spread, prevalence, incubation period and at-risk groups relating to influenza viruses. It gives information on symptoms, laboratory diagnosis, treatment, prophylaxis and infection control.
This chapter provides details of the viruses associated with malignancies (HBV, HCV, HTLV1, EBV, HPVs, HHV8). It gives details of symptoms, risk factors, treatment and prevention strategies.
This chapter details the epidemiology, route of spread, prevalence, incubation period and at-risk groups relating to parainfluenzaviruses. It gives information on symptoms, laboratory diagnosis, treatment, prophylaxis and infection control.
This chapter details the epidemiology, route of spread, prevalence, incubation period and at-risk groups relating to HAV. It provides information on symptoms, laboratory diagnosis, treatment, prophylaxis and infection control.