Description Usage Arguments Value

To calculate the probability that any asymptomatic person has COVID-19,
this function treats each person/exposure as independent events and
calculates the probability time series using the individuals time series from
`individual_probability()`

.

1 | ```
unit_probability(test_day, pre0, sens, spec, asympt, days, mu, sigma, n)
``` |

`test_day` |
Day of PCR test (days since exposure) |

`pre0` |
Pre-test probability of person on day of exposure |

`sens` |
A vector of sensitivities by day since exposure |

`spec` |
The specificity of the PCR test |

`asympt` |
The proportion of infected patients expected to remain asymptomatic throughout the course of infection |

`days` |
Days since exposure for calculation range |

`mu` |
The mean of a lognormal distribution that approximates the incubation period for COVID-19. E.g. 1.63 (see reference). |

`sigma` |
The standard deviation of a lognormal distribution that approximates the incubation period for COVID-19. E.g. 0.5 (see reference). |

`n` |
Number of exposed individuals |

The probability of an event with the specified probability, after n repetitions

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