Query: NC_011147:1239904 Salmonella enterica subsp. enterica serovar Paratyphi A str Lineage: Salmonella enterica; Salmonella; Enterobacteriaceae; Enterobacteriales; Proteobacteria; Bacteria General Information: This strain is a clinical isolate collected from a child with paratyphoid fever in Karachi, Pakistan, 2004. This group of Enterobactericiae have pathogenic characteristics and are one of the most common causes of enteric infections (food poisoning) worldwide. They were named after the scientist Dr. Daniel Salmon who isolated the first organism, Salmonella choleraesuis, from the intestine of a pig. The presence of several pathogenicity islands (PAIs) that encode various virulence factors allows Salmonella spp. to colonize and infect host organisms. There are two important PAIs, Salmonella pathogenicity island 1 and 2 (SPI-1 and SPI-2) that encode two different type III secretion systems for the delivery of effector molecules into the host cell that result in internalization of the bacteria which then leads to systemic spread.
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General Information: Citrobacter koseri ATCC BAA-895 is a clinical isolate from a human infant. Causative agent of neonatal meningitis. Citrobacter koseri, previously known as Citrobacter diversus, Levinea diversus or Levinea malonatica resides in a wide range of environments, including soil, water and food products. It is an occasional inhabitant of human and animal intestines, but is mainly characterized as being a causative agent of neonatal meningitis with an extreme high rate of multiple brain abscess initiations and a concomitant high moratility rate. The bacteria are used in neonatal rat models to study the mechanism of blood-brain barrier penetration, host immune response evasion and its resistance to phagocytotic killing.