case-to-infection proportion
The epidemiologist calculated the case-to-infection proportion for the new virus.
Noun: A specific epidemiological metric calculated by dividing the number of confirmed clinical cases of a disease by the total number of infections (including both symptomatic and asymptomatic) caused by the pathogen responsible for that disease. This proportion indicates what fraction of total infections result in identifiable illness.
The term is used in public health, epidemiology, and medical research to quantify disease severity and understand transmission dynamics. It is a technical term found in scientific literature and reports.
- Public health officials estimated the case-to-infection proportion for the virus to be around 30%, meaning only three out of every ten infected individuals showed symptoms severe enough to be reported.
- A low case-to-infection proportion can make a disease harder to track, as many carriers may be unaware they are infected.
- The study aimed to determine if the case-to-infection proportion varied significantly across different age groups.
- The case-to-infection proportion is a critical parameter for modeling the spread of an epidemic and for planning appropriate healthcare responses.
- It is sometimes conflated with the infection fatality ratio (IFR), but they are distinct; the IFR divides deaths by total infections, while the case-to-infection proportion divides clinical cases by total infections.
- Case-to-infection ratio: Often used interchangeably with "proportion."
- Symptomatic rate: A closely related concept, though it may specifically refer to the proportion of infections that lead to symptoms, not necessarily reported cases.
- Infection fatality ratio (IFR): The proportion of deaths among all infected individuals.
- Case fatality rate (CFR): The proportion of deaths among confirmed cases.
- Clinical attack rate (in specific contexts)
- Symptomatic proportion
This is a compound noun. In formal writing, it may be hyphenated as "case-to-infection proportion" or, less commonly, presented as a single unhyphenated phrase. It is a precise technical term and is not typically used in everyday conversation.
The epidemiologist calculated the case-to-infection proportion for the new virus.
- the number of cases of a disease divided by the number of infections with the agent that causes the disease