Pathogenicity and virulence of : A paradigm of chronic infection.

Infection with is one of the most common infections of mankind. Infection typically occurs in childhood and persists for the lifetime of the host unless eradicated with antimicrobials. The organism colonizes the stomach and causes gastritis.

Different stages of the infection cycle are enriched for strains with distinct phenotypes and levels of fluoroquinolone resistance.

species are the leading cause of bacterial diarrhoea worldwide and consumption of contaminated chicken meat is the most common route of infection. Chickens can be infected with multiple strains of and during the infection cycle this pathogen must survive a wide variety of environments. Numerous studies have reported a high degree of genetic variability in this pathogen that can use antigenic and phase variation to alter the expression of key phenotypes.

Revised Case Finding Protocol for Dysglycemia in Chile: A Call for Action in Other Populations.

Objective: Guidelines recommend case finding for dysglycemia (prediabetes and type 2 diabetes [T2D]) in adults or youth older than 10 years with overweight/obesity, but increased adiposity has not been associated with dysglycemia in some Hispanic populations. This study aims to determine the prevalence of dysglycemia in this population using simplified criteria independent of body mass index and age to request an oral glucose tolerance test (OGTT).

Methods: Cross-sectional retrospective analysis of medical records from a clinical center in Chile (2000-2007).

Cicada nymphs dominate American black bear diet in a desert riparian area.

American black bears are considered dependent on high-elevation forests or other montane habitats in the drylands of western North America. Black bear sign, including that of cubs, was observed throughout the summers of 2015, 2016, and 2018 along a perennial desert river in the Sonoran Desert of Arizona. We analyzed the contents of 21 black bear scats, collected from May to October of 2016 and 2018.

Cytotype and genotype predict mortality and recruitment in Colorado quaking aspen (Populus tremuloides).

Species responses to climate change depend on environment, genetics, and interactions among these factors. Intraspecific cytotype (ploidy level) variation is a common type of genetic variation in many species. However, the importance of intraspecific cytotype variation in determining demography across environments is poorly known.