Author: Kenji Mizumoto; Katsushi Kagaya; Alexander Zarebski; Gerardo Chowell
Title: Estimating the Asymptomatic Proportion of 2019 Novel Coronavirus onboard the Princess Cruises Ship, 2020 Document date: 2020_2_23
ID: atnz63pk_1
Snippet: The clinical and epidemiological characteristics of COVID-19 continue to be investigated as the virus continues its march through the human population [2] [3] . While reliable estimates of the reproduction number and the death risk associated with COVID-19 are crucially needed to guide public health policy, another key epidemiological parameter that could inform the intensity and range of social distancing strategies to combat COVID-19 is the asy.....
Document: The clinical and epidemiological characteristics of COVID-19 continue to be investigated as the virus continues its march through the human population [2] [3] . While reliable estimates of the reproduction number and the death risk associated with COVID-19 are crucially needed to guide public health policy, another key epidemiological parameter that could inform the intensity and range of social distancing strategies to combat COVID-19 is the asymptomatic proportion, which is broadly defined as the proportion of asymptomatic infections among all the infections of the disease. Indeed, the asymptomatic proportion is a useful quantity to gauge the true burden of the disease and better interpret estimates of the transmission potential. This proportion varies widely across infectious diseases, ranging from 8% for measles and 32% for norovirus up to 90-95% for polio [4] [5] [6] . Most importantly, it is well established that asymptomatic individuals are frequently able to transmit the virus to others [7] [8] .
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