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After the latency period (but before clinical infection) the infected person can transmit the disease without signs of any symptoms. Such infection is called subclinical infection. Incubation period (also known as the latent period or latency period ) is the time elapsed between exposure to a pathogenic organism, a chemical, or radiation , and ...
After the incubation period is over, the host enters the symptomatic period. Moreover, at a certain point in time after infection, the host becomes capable of transmitting pathogens to others, i.e. they become infectious or communicable. [3] Depending on the disease, the host individual may or may not be infectious during the incubation period. [3]
The median delay for COVID-19 is four to five days [17] possibly being infectious on 1–4 of those days. [18] Most symptomatic people experience symptoms within two to seven days after exposure, and almost all will experience at least one symptom within 12 days. [17] [19] Most people recover from the acute phase of the disease.
The researchers estimated that, in a group of 10,000 people who catch COVID-19 and will develop symptoms, about 101 would start showing symptoms after health officials had ceased monitoring them.
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If you have no COVID symptoms but a known exposure, you might still have COVID. Take precautions, test again 48 hours later, and if the second test is negative, take a third test 48 hours later.
The relationship between the latent period, the infectious period (the period of communicability) and the incubation period. In some diseases, as depicted in this diagram, the latent period is shorter than the incubation period. A person can transmit an infection without showing any signs of the disease.
Human coronaviruses are capable of causing illnesses ranging from the common cold to more severe diseases such as Middle East respiratory syndrome (MERS, fatality rate ~34%). SARS-CoV-2 is the seventh known coronavirus to infect people, after 229E, NL63, OC43, HKU1, MERS-CoV, and the original SARS-CoV. [105]