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Staphylococcus aureus is the most common cause of healthcare-associated bacteremia in North and South America and is also an important cause of community-acquired bacteremia. [14] Skin ulceration or wounds, respiratory tract infections, and IV drug use are the most important causes of community-acquired staph aureus bacteremia.
Streptococcus agalactiae is the most common human pathogen belonging to group B of the Lancefield classification of streptococci—hence the name of group B stretococcal (GBS). Infection with GBS can cause serious illness and sometimes death, especially in newborns, the elderly, and people with compromised immune systems .
Of course, neonates are also vulnerable to other common pathogens that can cause meningitis and bacteremia such as Streptococcus pneumoniae and Neisseria meningitidis. Although uncommon, if anaerobic species are suspected (such as in cases where necrotizing enterocolitis or intestinal perforation is a concern, clindamycin is often added.
The diseases that may be caused as a result of this include streptococcal toxic shock syndrome (STSS), necrotizing fasciitis (NF), pneumonia, and bacteremia. [4] In addition, infection of GAS may lead to further complications and health conditions, namely acute rheumatic fever and poststreptococcal glomerulonephritis. Most common:
Salmonella. Salmonella enteritidis; Salmonella typhi; Salmonella typhimurium; Serratia marcescens; Shigella dysenteriae; Spirillum volutans; Staphylococcus
Globally, it is the most common cause of infections of the back of the eye. (posterior segment). The most common sign is decreased vision in one eye. Other signs and symptoms may appear after the neonatal period and include: chorioretinitis development later in life, intracranial calcification hydrocephalus or central nervous system ...
Streptococcus pneumoniae is the most common bacterial cause of pneumonia in all age groups except newborn infants. Streptococcus pneumoniae is a Gram-positive bacterium that often lives in the throat of people who do not have pneumonia. Other important Gram-positive causes of pneumonia are Staphylococcus aureus and Bacillus anthracis.
[13] [15] Pneumonia is also the leading cause of death in children less than five years of age in low income countries. [15] The most common cause of pneumonia is pneumococcal bacteria, Streptococcus pneumoniae accounts for 2/3 of bacteremic pneumonias. [16] Invasive pneumococcal pneumonia has a mortality rate of around 20%. [14]