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Total viable count (TVC), gives a quantitative estimate of the concentration of microorganisms such as bacteria, yeast or mould spores in a sample.The count represents the number of colony forming units (cfu) per g (or per ml) of the sample.
The aim of bioburden testing is to measure the total number of viable micro-organisms (total microbial count) on a medical device prior to its final sterilization before implantation or use. [ 2 ] 21 C.F.R. 211.110 (a)(6) states that bioburden in-process testing must be conducted pursuant to written procedures during the manufacturing process ...
In microbiology, a colony-forming unit (CFU, cfu or Cfu) is a unit which estimates the number of microbial cells (bacteria, fungi, viruses etc.) in a sample that are viable, able to multiply via binary fission under the controlled conditions. Counting with colony-forming units requires culturing the microbes and counts only viable cells, in ...
Colonies that develop in the body of the medium can be counted by eye after incubation. [citation needed] The total number of colonies is referred to as the total viable count (TVC). The unit of measurement is cfu/ml (or colony forming units per millilitre) and relates to the original sample.
Total viable organism (or TVO) is a term used in microbiology to quantify the amount of microorganisms present in a sample. [1] Each sample is usually cultured on a variety of agar plates (petri dishes) often containing different types of selective media. The colony-forming units (CFUs) are calculated after allowing time for growth.
In epidemiology, force of infection (denoted ) is the rate at which susceptible individuals acquire an infectious disease. [1] Because it takes account of susceptibility it can be used to compare the rate of transmission between different groups of the population for the same infectious disease, or even between different infectious diseases.
Bacteria can also spread via the blood to other parts of the body (which is called hematogenous spread), causing infections away from the original site of infection, such as endocarditis or osteomyelitis. [citation needed] Treatment for bacteremia is with antibiotics, and prevention with antibiotic prophylaxis can be given in high risk ...
After the host coughs, the bacteria in their respiratory airways will be exposed to the air by way of aerosolized droplets, threatening nearby humans. [31] A human host can exhibit a range of physical reactions as a result of the B. pertussis pathogen, depending on how well their body is equipped to fight infection. [31]
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