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Streptococcus

Streptococcus

1 5.1
A group of round bacteria that often form chains and cause infections like strep throat
  • noun
  • /ˌstrɛp.təˈkɑ.kəs/
  • Specialized
translation icon : Estreptococo
  • Streptococcus pneumoniae, or pneumococcus, causes an estimated 4 million illnesses in the United States annually (1).
  • Streptococcus pneumoniae
  • Streptococcus pyogenes
  • Streptococcus viridans

Examples

  • Meningitis is also caused by viruses and other bacteria, notably Haemophilus influenzae (Hib) and the pneumococcus (Streptococcus pneumoniae).

    Academic text (2011)
  • No patient had either Streptococcus pyogenes or Staphylococcus aureus.

    Academic text (2003)
  • Resistance of Streptococcus pneumoniae to antimicrobial drugs is also a concern.

    Academic text (2014)
  • In rhinosinusitis cases known to be caused by bacterial pathogens, Streptococcus pneumoniae is the most common isolate.

    Academic text (2006)
  • The three most common causative bacteria are H. influenzae, Streptococcus pneumoniae, and Neisseria meningitidis.

    Academic text (2006)
  • The microorganisms most frequently found are Streptococcus pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis.

    Academic text (2000)
  • Our aim was to investigate if there is an association between group A beta-hemolytic Streptococcus infection and acute myocardial infarction (AMI).

    Academic text (2007)
  • Non-motile bacteria, particularly Staphylococcus and Streptococcus species, are identified by their microscopic appearance in stained samples of plasma precipitate.

    Academic text (2017)
  • Common pathogens include Staphylococcus aureus, Streptococcus spp., and Escherichia coli, as well as gram-negative organisms and anaerobes in mixed infections.

    Academic text (2008)
  • The bacterium Streptococcus pneumoniae is a leading cause of pneumonia in older adults.

Synonyms

strep
vsStreptococcus
  • Specialized
17 4.2

A kind of bacteria that often causes sore throats and other infections

is the formal genus term rather than the informal name
streptococci
vsStreptococcus
  • Specialized
1 8.6

Bacteria that cause illnesses like sore throat or scarlet fever

is the genus name for these bacteria rather than the plural label

Compounds

6.1

Bacteria called streptococcus infect the tonsils and throat and make them sore

Surface Forms

Streptococcus singular
Streptococci plural

Morphology

Streptococcus = coccus (opaque) = strepto + coccus

The term is composed of Greek combining forms used in scientific nomenclature; these combining forms are not productive or familiar to average learners, so the meaning is not derivable from common English morphemes.

Etymology

Streptococcus comes from two old Greek parts: strepto- meaning 'twisted' and -coccus meaning 'berry'. It describes round bacteria that often join together in twisted chains, and it is the source of the short name 'strep' in 'strep throat'.