: The Journey from the Environment to the Blood.

An outbreak of a potentially fatal form of pneumonia in 1976 and in the annual convention of the American Legion was the first time that spp. was identified. Thereafter, the term Legionnaires' disease (LD) was established.

The Emerging Role of Neutrophils in the Pathogenesis of Thrombosis in COVID-19.

Previous studies have shown that COVID-19 leads to thrombotic complications, which have been associated with high morbidity and mortality rates. Neutrophils are the largest population of white blood cells and play a pivotal role in innate immunity. During an infection, neutrophils migrate from circulation to the infection site, contributing to killing pathogens.