Streptococcus variolae is a bacterial species that causes smallpox in humans. The spelling of this word can be broken down and explained through its International Phonetic Alphabet (IPA) transcription. Streptococcus is pronounced /striptə'kɑkəs/, with stress on the first syllable. Variolae is pronounced /vərɪəli/, with stress on the second syllable. Overall, the correct spelling and pronunciation of this word is crucial in identifying the bacteria and treating the associated disease.
Streptococcus variolae, also known as Streptococcus variola, is a bacterial species belonging to the Streptococcus genus. It is a gram-positive bacterium that appears in chains or pairs under a microscope, indicating its characteristic arrangement.
Historically, Streptococcus variolae has been associated with smallpox. Smallpox is a highly contagious and often fatal infectious disease caused by the Variola virus. The name "variola" in Streptococcus variolae acknowledges this strong connection. However, it is important to note that Streptococcus variolae itself does not cause smallpox.
Although Streptococcus variolae is primarily implicated in smallpox, it can also be found in other infections such as respiratory tract infections, urinary tract infections, and skin infections. It is an opportunistic pathogen, meaning it takes advantage of weakened immune systems or compromised barriers to invade and cause infection in the host.
In terms of its characteristics, Streptococcus variolae is a facultative anaerobe, capable of growing both in the presence and absence of oxygen. It is catalase-negative, producing no catalase enzyme, aiding in distinguishing it from other catalase-positive bacteria. Additionally, it can ferment carbohydrates, which allows it to obtain energy for growth and reproduction through the process of fermentation.
Overall, Streptococcus variolae is a bacterial species that historically has been associated with smallpox. It can cause various infections, particularly in individuals with weakened immune systems, and is characterized by its gram-positive, chain or pair arrangement under a microscope.
A species found in the vesicles of smallpox and cowpox; probably not pathogenic, but possibly symbiotic with the causative organism of the disease.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "Streptococcus variolae" has a Latin-based etymology.
- "Streptococcus" is derived from the Greek words "streptos", meaning twisted, and "kokkos", meaning a berry or grain. This refers to the way the bacteria forms chains of spherical cells.
- "Variolae" is a Latin word that means "pustules" or "smallpox". Variolae is the genitive form of variola, which is the Latin name for smallpox.
Therefore, "Streptococcus variolae" can be understood as a chain-forming bacteria associated with smallpox, indicating that it is a strain or variant of the Streptococcus bacteria found in patients with smallpox infections.