Pathogens, Free Full-Text

Understanding Legionella survival mechanisms within building water systems (BWSs) is challenging due to varying engineering, operational, and water quality characteristics unique to each system. This study aimed to evaluate Legionella, mycobacteria, and free-living amoebae occurrence within a BWS over 18–28 months at six locations differing in plumbing material and potable water age, quality, and usage. A total of 114 bulk water and 57 biofilm samples were analyzed. Legionella culturability fluctuated seasonally with most culture-positive samples being collected during the winter compared to the spring, summer, and fall months. Positive and negative correlations between Legionella and L. pneumophila occurrence and other physiochemical and microbial water quality parameters varied between location and sample types. Whole genome sequencing of 19 presumptive Legionella isolates, from four locations across three time points, identified nine isolates as L. pneumophila serogroup (sg) 1 sequence-type (ST) 1; three as L. pneumophila sg5 ST1950 and ST2037; six as L. feeleii; and one as Ochrobactrum. Results showed the presence of a diverse Legionella population with consistent and sporadic occurrence at four and two locations, respectively. Viewed collectively with similar studies, this information will enable a better understanding of the engineering, operational, and water quality parameters supporting Legionella growth within BWSs.

Pathogens, Free Full-Text

Interbacterial mechanisms of colonization resistance and the strategies pathogens use to overcome them - Mucosal Immunology

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First complete genome sequence and comparative analysis of Salmonella enterica subsp. diarizonae serovar 61:k:1,5,(7) indicates host adaptation traits to sheep, Gut Pathogens

Parasitologia E Micologia Humana Download - Colaboratory

A protein-free vaccine stimulates innate immunity and protects against nosocomial pathogens

Foodborne Pathogens and Disease Mary Ann Liebert, Inc., publishers

PDF) Detection and characterization of zoonotic pathogens of free-ranging non-human primates from Zambia.

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Sequential Infection with Common Pathogens Promotes Human-like Immune Gene Expression and Altered Vaccine Response - ScienceDirect

Lung lysophospholipase activity in specific-pathogen-free rats infected with Pasteurella pneumotropica or Mycoplasma pulmonis. - Abstract - Europe PMC

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Microbial Minimalism: Genome Reduction in Bacterial Pathogens - ScienceDirect

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