What does pre-symptomatic transmission of COVID-19 mean?

The incubation period for COVID-19, which is the time between exposure to the virus (becoming infected) and symptom onset, is on average 5-6 days, however can be up to 14 days. During this period, also known as the “pre- symptomatic” period, some infected persons can be contagious. Therefore, transmission from a pre-symptomatic case can occur before symptom onset.

What are the factors that can determine transmission risk of COVID-19?

Factors that determine transmission risk include whether a virus is still replication-competent, whether the patient has symptoms, such as a cough, which can spread infectious droplets, and the behavior and environmental factors associated with the infected individual.

What is asymptomatic transmission?

An asymptomatic laboratory-confirmed case is a person infected with COVID-19 who does not develop symptoms. Asymptomatic transmission refers to transmission of the virus from a person, who does not develop symptoms. There are few reports of laboratory-confirmed cases who are truly asymptomatic, and to date, there has been no documented asymptomatic transmission. This does not exclude the possibility that it may occur. Asymptomatic cases have been reported as part of contact tracing efforts in some countries.

What is community transmission of COVID-19?

Community transmission is evidenced by the inability to relate confirmed cases through chains of transmission for a large number of cases, or by increasing positive tests through sentinel samples (routine systematic testing of respiratory samples from established laboratories).

What does shedding mean in viruses?

Viral shedding. Viral shedding refers to the expulsion and release of virus progeny following successful reproduction during a host-cell infection. Once replication has been completed and the host cell is exhausted of all resources in making viral progeny, the viruses may begin to leave the cell by several methods.

How to stop herpes shedding?

Use latex condoms in between outbreaks to help protect against shedding. Antiviral Medications and some herbs, such as Olive Leaf, have been proven to help reduce herpes viral shedding, helping to lower (but not eliminate) the risk of transmission.

What is shedding a virus?

Shedding is a real phenomenon, and refers to a period of time during a viral infection when the virus is coming off the infected person in some way and is capable of infecting other people. The measles virus, for example, is very contagious.

How often does herpes shed?

People with eight or more genital herpes outbreaks per year shed infectious virus 31% of the time. People with one to seven outbreaks a year shed infectious virus 19% of the time.